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Porsche 911 GT3 (2010 year). Manual - part 11

Cleaning airbags covers

Fabric, upholstery, carpets and

Alcantara

floor-mats

Danger!

f Do not use a leather care product to clean

f Use only a vacuum cleaner or a medium stiff

Alcantara.

Risk of danger of serious personal injury or

brush.

death if the airbag system is impaired by

For regular care it is sufficient to clean the cover

improper cleaning work.

f Remove stains and spots with Porsche stain

with a soft brush.

remover.

f

Do not make any modifications whatsoever on

Heavy abrasion or rubbing when cleaning causes

individual components such as the padded

The Porsche range of accessories includes

a lasting change in the surface.

covers of the steering wheel, passenger side

nonskid floor-mats to protect the carpets in

summer and winter.

Cleaning when lightly soiled

instrument panel, the front seats and the door

linings.

f Wet a soft cloth with water or a neutral soap

Warning!

solution and wipe off the dirt.

f

Let your authorized Porsche dealer clean

these components.

Risk of an accident resulting in serious

Cleaning when heavily soiled

personal injury or death.

f Wet a soft cloth with lukewarm water or

f Always check the movement of the pedals

thinned white spirit and dab the dirt from the

before driving and make sure that they are not

outside in.

obstructed by a floor-mat or any other object.

f Secure the floor-mat to prevent it from sliding

Safety belts

into positions that could interfere with the safe

operation of your vehicle - do not install them

If it becomes necessary to clean the belts, you

loosely in the vehicle.

can use any mild washing agent.

Your Porsche dealer will be glad to offer you

Allow the belts to dry prior to retracting, but avoid

nonskid floor-mats of the correct size.

direct sunlight.

f Only use suitable cleaners.

If unsuitable cleaners are used or any attempt

is made to dye or bleach the belts, the

webbing may be weakened and thus constitute

a safety risk.

180 Maintenance, Car Care

f

In particular, be very careful to ensure that

f

Do not smoke or allow an open flame around

Exercise Extreme Caution when

items of clothing (ties, shirt, sleeves etc.),

the battery or fuel.

Working on your Vehicle

jewelry, long hair, hand or fingers cannot get

Keep a fire extinguisher in close reach.

caught in the engine-compartment blower, fan,

Danger!

f

Incomplete or improper servicing may cause

belts or other moving parts.

problems in the operation of the car. If in doubt

Ignoring the following instructions may

The radiator and radiator fan are in the front of

about any servicing, have it done by your

cause serious personal injury or death.

the car.

authorized Porsche dealer.

The engine-compartment blower is mounted

f

The engine compartment of any motor vehicle

Improper maintenance during the warranty

on the engine-compartment lid.

is a potentially hazardous area. If you are not

period may affect your Porsche warranty

The engine-compartment blower can start or

fully familiar with proper repair procedures, do

coverage.

continue running as a function of temperature,

not attempt the adjustments described on the

even with the engine switched off.

f

Supplies of fluids, e.g. engine oil, brake fluid or

following pages.

Carry out work in these areas only with the

coolant, are hazardous to your health.

This caution also applies to the entire vehicle.

engine off, the ignition switched off, and

Keep these fluids out of children’s reach and

f

Only work on your vehicle outdoors or in a well

exercise extreme caution.

dispose of them in accordance with the appro-

ventilated area.

priate regulations.

f

Your Porsche is equipped with an electronic

f

Ensure that there are no open flames in the

ignition system. When the ignition is on, high

f

Some countries require additional tools and

area of your vehicle at any time when fuel

voltage is present in all wires connected with

special spare parts to be carried.

fumes might be present. Be especially

the ignition system; therefore, exercise

Please make enquiries before driving abroad.

cautious of such devices such as hot water

extreme caution when working on any part of

heaters which ignite a flame intermittently.

the engine while the ignition is on or the engine

is running.

f

Before working on any part in the engine

compartment, turn the engine off and let it cool

f

Always support your car with safety stands if it

down sufficiently. Hot engine compartment

is necessary to work under the car.

components can burn skin on contact.

Jacks are not suitable for this kind of work.

f

Be alert and cautious around engine at all

f

When working under the car without safety

times while the engine is running.

stands but with the wheels on the ground,

If work has to be performed with the engine

make sure the car is on level ground, the

running, always set the parking brake, and

wheels are blocked, and that the engine

make sure the shift lever is in neutral position.

cannot be started.

Remove the ignition key.

Practical Tips, Emergency Service

183

Danger!

Tires/Wheels

Risk of loss of control and serious personal

The original equipment tires and wheel rims on

injury or death.

your Porsche comply with all applicable Federal

Motor Vehicle Safety Standards.

f

If while driving, your vehicle experiences a

sudden vibration or ride disturbance, and/or

For your safety remember the following:

you suspect that possible damage to your tires

-

Wheel rims and wheel bolts are matched to fit

or vehicle has occurred, you should immedia-

your Porsche.

tely reduce your speed without excessive use

of the brakes.

-

If you intend to use other than original equip-

ment wheels, be sure that they conform to

f

Stop the vehicle as soon as possible, and

Porsche specifications for your model.

inspect the tires.

Only tires with the same make and with the

If you cannot determine the cause for the

same specification code (e.g. “N0”, “N1”...)

disturbance, have your vehicle towed to the

can be mounted.

nearest Porsche or tire dealer to have your

vehicle or tire(s) inspected.

-

The use of wheel rims and wheel bolts that do

not meet specifications of the original factory

f

Continuing to operate the vehicle without

installed equipment will affect the safe opera-

correction could result in a loss of control and

Example

tion of your vehicle.

serious personal injury.

-

Before you plan on exchanging wheels, or

Uniform Tire Quality Grading

snow tires already mounted on the wheel rims,

Quality grades can be found where applicable on

consult your authorized Porsche dealer. Your

the tire sidewall between tread shoulder and

dealer has the technical information necessary

maximum section width.

to advise you which wheel rims and wheel bolts

are compatible with the original factory instal-

All passenger car tires must conform to Federal

lations.

Safety Requirements in addition to these grades.

184 Practical Tips, Emergency Service

Treadwear

Temperature A, B, C

Tire pressures

The treadwear grade is a comparative rating

The temperature grades are A (the highest), B and

Warning!

based on the wear rate of the tire when tested

C, representing the tire’s resistance to the genera-

under controlled conditions on a specific govern-

tion of heat and its ability to dissipate heat when

Incorrect tire pressure causes increased tire

ment test course.

tested under controlled conditions on a specified

wear and adversely affects road handling.

For example, a tire graded 150 would wear one

indoor laboratory test wheel.

This could lead to tire failure, resulting in loss

Sustained high temperatures can cause the

of control, leading to serious personal injury

and a half (1-1/2) times as well on the government

material of the tire to degenerate and reduce tire

or death.

course as a tire graded 100.

life, and excessive temperature can lead to

The relative performance of tires depends upon

f

Always use an accurate tire pressure gauge

sudden tire failure.

the actual conditions of their use, however, and

when checking inflation pressures.

The grade C corresponds to a level of perfor-

may depart significantly from the norm due to var-

mance which all passenger car tires must meet

f

Do not exceed the maximum tire pressure

iations in driving habits, service practices and dif-

under the Federal Motor Vehicle Safety Standard

listed on the tire sidewall.

ferences in road characteristics and climate.

No. 109.

Please see the chapter “TIRE PRESSURE

Grades B and A represent higher levels of perfor-

PLATE” on Page 235.

Traction AA, A, B, C

mance on the laboratory test wheel than the

The traction grades, from highest to lowest, are

f

Cold tire inflation pressure means: all tires

minimum required by law.

AA, A, B, and C and they represent the tire’s ability

must be cold, ambient temperature maximum

to stop on wet pavement as measured under

(68 °F/20 °C), when adjusting the inflation

Warning!

controlled conditions on specified government

pressure.

test surfaces of asphalt and concrete.

The temperature grade for this tire is established

Avoid sunlight striking the tires before measu-

A tire marked C may have poor traction perfor-

for a tire that is properly inflated and not

ring cold pressures, since the pressures would

mance.

overloaded.

rise from temperature influence.

Excessive speed, underinflation, or excessive

f

Valve caps protect the valve from dust and dirt,

loading, either separately or in combination, can

Warning!

and thus from leakage.

cause heat buildup and possible tire failure, resul-

Always screw caps tightly down.

The traction grade assigned to this is based on

ting in serious personal injury or death.

braking (straight-ahead) traction tests and does

Replace missing caps immediately.

not include cornering (turned) traction, accelera-

f

Use only plastic valve caps.

tion, hydroplaning or peak traction characteris-

tics.

f

Do not use commercially available sealant or

tire inflating bottles. Only use Porsche

approved tire sealant.

Practical Tips, Emergency Service

185

f Please see the chapter “TIRE PRESSURES FOR

f Never let air out of hot tires.

COLD TIRES 68 °F/20 °C” on Page 237.

This could cause the tire pressure to fall below

the prescribed value.

Each tire, should be checked every 2 weeks when

cold (68 °F/20 °C) and inflated to the inflation

Insufficient tire filling pressure can cause tires to

pressure recommended in this Owner's Manual or

overheat and thus be damaged - even invisibly.

on the tire-pressure plate.

Hidden tire damage is not eliminated by subse-

If your vehicle has tires of a different size than the

quently correcting the tire pressure.

size indicated in this Owner's Manual or on the tire-

pressure plate, you should determine the proper

Overloading

tire inflation pressure for those tires.

Danger!

As an added safety feature, your vehicle has been

equipped with a tire pressure monitoring (TPM)

Risk of damage to vehicle parts, loss of

that illuminates a low tire pressure message when

control and serious personal injury or death.

one or more of your tires is significantly under-

f

Do not overload your vehicle.

inflated. Accordingly, when the low tire pressure

message illuminates, you should stop and check

f

If loading the vehicle also correct the tire

your tires as soon as possible, and inflate them to

pressure. Tire pressure for loaded vehicle can

the proper pressure. Driving on a significantly

be found on the tire pressure plate and in the

Example of a tire pressure plate

under-inflated tire causes the tire to overheat and

chapter technical data.

can lead to tire failure. Under-inflation also

Tire pressure plate

f

Never exceed the specified axle load.

reduces fuel efficiency and tire tread life, and may

Overloading can shorten the service life of the

affect the vehicle’s handling and stopping ability.

Information on the tire pressure plate

tires and car, as well as lead to dangerous

Please note that the TPM is not a substitute for

vehicle reactions and long braking distances.

A Seating capacity

proper tire maintenance, and it is the driver’s

Damage due to overloading is not covered by

Maximum number of vehicle occupants, inclu-

responsibility to maintain correct tire pressure,

the vehicle warranty.

ding the driver.

even if under-inflation has not reached the level to

trigger illumination of the TPM low tire pressure

f

Please see the chapter “LOADING INFORMA-

message.

TION” on Page 195.

f Please see the chapter “TPM TIRE PRESSURE

f

Please see the chapter “TIRE PRESSURES FOR

MONITORING” on Page 134.

COLD TIRES 68 °F/20 °C” on Page 237.

When tires are warm, the tire pressure is

increased.

186 Practical Tips, Emergency Service

B

Vehicle load limit

Tire traction

Tire wear

Is the maximum total weight limit specified of

the load (passengers and cargo) for the

Warning!

The original equipment tires on your Porsche have

vehicle. This is the maximum weight of passen-

built-in tire wear indicators. They are molded into

When driving on wet or slushy roads, a

gers and cargo that can be loaded into the

the bottom of the tread grooves and will appear as

wedge of water may build up between the

vehicle.

approximately 1/2 in. (12 mm) bands when the

tires and the road. This phenomenon is

Please see the chapter “LOADING INFORMA-

tire tread depth is down to 1/16 of an in.

known as “hydroplane” and may cause

TION” on Page 195.

(1.6 mm).

partial or complete loss of traction, vehicle

C

Tire size for the front axle

control or stopping ability.

When the indicators appear in two or more

Check with your authorized Porsche dealer

adjacent grooves, it is time to replace the tires.

f Reduce speed on wet surface to prevent this.

about the current release status.

We recommend, however, that you do not let the

tires wear down to this extent.

D

Recommended tire pressure for the front axle

Worn tires cannot grip the road surface properly

These values are for cold tires (68 °F/20 °C).

Tire life

and are even less effective on wet roads.

E

Tire size for the rear axle

Tire life depends on various factors, i. e., road

In the United States, state laws may govern the

Check with your authorized Porsche dealer

surfaces, traffic and weather conditions, driving

minimum tread depth permissible. Follow all such

about the current release status.

habits, type of tires and tire care.

laws.

F

Recommended tire pressure for the rear axle.

f Inspect your tires for wear and damage before

These values are for cold tires (68 °F/20 °C).

driving off. If you notice uneven or substantial

wear, wheels might need alignment or tires

G

In vehicles with collapsible spare wheel:

should be balanced or replaced.

Size and tire pressure of the spare wheel.

Practical Tips, Emergency Service

187

Danger!

Tire care

Tire damage, puncture

Driving on worn tires can result in loss of

f

Avoid damaging tires and wheel rims.

High-pressure cleaning units or steam cleaners

control of the vehicle and could cause

can damage the tires.

serious personal injuries or death.

f

If you must drive over a curb or other obstacle,

drive slowly and at an obtuse angle.

f Please see the chapter “HIGH-PRESSURE

f Do not drive with worn tires or tires showing

CLEANING EQUIPMENT, STEAM CLEANERS”

cuts or bruises as they may lead to sudden

f

Check tires for uneven wear and damage

on Page 174.

deflation and loss of control which could cause

before driving off.

severe personal injury.

f Check tires for imbedded material, cuts,

f

Remove imbedded material.

punctures, cracks and bulges (side wall)

f Specialized high performance tires on high

f

Replace worn or damaged tires immediately.

before driving off.

performance sports cars exhibit more wear

than those on a family sedan, or even a high

f

Keep oil, fuel, brake fluid, etc. away from tires.

In case of tire damage, where it is uncertain

performance sedan.

whether there is a break in the ply with all its

f

Replace missing valve stem caps.

Therefore, it is important to check your tire

consequences or tire damage caused by thermal

pressure and condition at least every two

f

Keep tires inflated correctly.

or mechanical overloading due to loss of pressure

weeks.

or any other prior damage, we recommend that

f

Wash tires when washing the vehicle. Also

the tire be replaced for safety reasons.

clean inner side of wheels.

If you notice that tires are wearing unevenly,

If one faulty tire is replaced it should be noted that

consult your Porsche dealer.

f

Do not use abrasive cleaners when washing

the difference in tread depth on one axle must not

Uneven wear may not always be due to improper

the wheels.

exceed 30%.

wheel alignment. It can be the result of individual

f

Check wheel rims for corrosion.

Handling inconsistencies may result.

driving habits such as cornering at high speeds. If

the tire pressure is not checked and adjusted

f

Remove road salt, if driving in winter.

f Perform a visual inspection if necessary.

regularly, abnormal tire wear can also occur.

188 Practical Tips, Emergency Service

Danger!

Tire replacements

If new tires are installed only on one axle, a notice-

able change in handling occurs due to the different

Risk of serious personal injury or death.

If in doubt, contact your authorized Porsche

tread depth of the other tires.

Driving the vehicle with low tire pressure

dealer.

This happens especially if only rear tires are

increases risk of a tire failure and resulting

Use only tire makes and types approved by

replaced. However, this condition disappears as

loss of control. Furthermore, low tire

Porsche.

the new tires are broken in.

pressure increases rate of wear of the

affected tires.

f Please adjust your driving style accordingly.

If you do not use a Porsche recommended

f

Check tires - including sidewalls - regularly for

replacement tire, make sure that you

Installation of new tires should only be done by a

foreign bodies, nicks, cuts, cracks and bulges.

purchase your new tires from a reputable tire

qualified tire technician.

dealer and that the dealer complies with all

f

After driving off road, examine tires for signs

manufacturers warnings for those tires.

Valves

of damage such as cuts, tears, bulges or

Please observe the installation and replacement

foreign objects stuck in the tread. Replace a

Only tires with the same make and with the

damaged tire if necessary.

instructions for valves.

same specification code (e.g. “N0”, “N1”...)

can be mounted.

f Use only genuine Porsche metal valves.

f

Cross curb edges slowly and at right angles if

possible.

f Protect the valve inserts against soiling with

Before mounting new tires, check with your

Avoid driving over steep or sharp curbs.

valve caps.

Porsche dealer about the current release

f

In cases of doubt, have the wheel (particularly

status.

Soiled valve inserts can cause a gradual loss

the inner side) checked by an authorized

of air.

Use tires with “ZR” quality standards. There

Porsche dealer.

f Use only plastic valve caps.

are currently no standards concerning tire

strength at speeds above 150 mph (240 km/h).

Tires should be replaced no less than on one axle

at the time.

Only tires of the same make and type must be

used. Mixed tires are not permissible.

Initially, new tires do not have their full traction.

You should therefore drive at moderate speeds

during the first 60 - 120 miles (100 - 200 km).

Practical Tips, Emergency Service

189

Parking at the curb

Wheel alignment, wheel balancing

Wheels with Tire Pressure Monitoring

(TPM) sensors

Warning!

As a precaution, have wheels with summer tires

balanced in the spring, and those with mud and

Before changing wheels, make sure that the

Hard impacts against curbs (or traffic

snow tires before winter.

wheels are compatible with your vehicle's TPM.

islands) are dangerous and may cause

Unbalanced wheels may affect car handling and

hidden tire damage which is not noticeable

f

Check this with your authorized Porsche

tire life.

until later. Such damage can result in

dealer.

Only the specified weights may be used for wheel

accidents at high speeds causing serious

balancing.

personal injury or death.

Self-adhesive weights must not come into contact

Depending on the force of impact, the edge

with cleaning agents, since they could drop off.

of the rim can also be damaged.

Uneven tread wear indicates wheel imbalance. In

f

If you are in doubt, have the wheel checked by

this event, the vehicle should be checked at an

an expert, particularly if you suspect damage

authorized Porsche dealer.

on the inside.

Warning!

f

If you must drive over a curb or other obstacle,

drive slowly and at an obtuse angle. Exercise

If, during a trip, uneven running or vibrations

care when parking along curbs.

occur that could be caused by damage to

tires or the car, the speed must be reduced

immediately, but without braking sharply.

If you continue your trip without having the

cause of the fault remedied, you might lose

control of your vehicle which could cause

serious personal injury or death.

f Stop the vehicle and check the tires.

f If no cause for the fault can be found, drive

carefully to the nearest authorized Porsche

dealer.

190 Practical Tips, Emergency Service

Removing and storing tires

Note

Before mounting snow tires, consult with

your Porsche dealer. He has the technical

Under no circumstances should tires older than

f After changing, adjust tire pressure and torque

information necessary to advise you on

6 years be used on your Porsche.

wheel bolts diagonally to 370 ftlb (500 Nm).

wheel and tire compatibility.

The age of the tire can be obtained from the “DOT”

Tires must always remain on the same side of

Snow tires should have the same load capacity as

code number. If, for example, the last four

the vehicle.

original equipment tires and should be mounted on

numbers read 1209, then the tire was produced in

When wheels are removed, the direction of

all four wheels.

the 12th week of 2009.

rotation and position of each wheel should be

Snow tires with studs should be run at moderate

marked.

f Store tires in a cool and dry place.

speeds when new in order to give the studs time

to settle.

Example

Snow tires

FR (front right), FL, RR and RL.

Danger!

For a better grip on snow and ice, use radial M+S

Wheels must always be fitted in accordance with

Tires with badly worn treads and studs are

tires with studs.

their marking.

very dangerous and could cause accidents

Check with your local Motor Vehicle Bureau for

resulting in serious personal injuries or

The perception that tire durability and perfor-

possible restrictions.

death.

mance are immune to the effects of storage and

age is unfounded.

Danger!

f Make sure they are replaced immediately.

Chemical additives, which make the rubber

Risk of loss of control and damage to the

elastic, lose their effectiveness in the course of

f Do not drive a vehicle equipped with snow tires

vehicle as well as serious personal injury or

time and the rubber becomes brittle and cracks.

at prolonged high speed.

death.

Snow tires do not have the same degree of

Therefore, the tires should be inspected from

The standard tires profile and rubber mixture

traction on dry, wet or snowfree roads as a

time to time.

are optimized for wet and dry driving condi-

normal tire.

tions, and may not prove favorable for snow

Furthermore, snow tires wear rapidly under

conditions.

these conditions.

f Therefore install M+S tires before driving in

Comply with all state and local laws

such conditions.

governing snow tire and tread depth require-

ments.

Practical Tips, Emergency Service

191

Danger!

Snow chains

Tire designations

Risk of accident and serious personal injury

Caution!

Due to new speed and load ratings for radial tires,

or death due to excessive speed.

new designations have come into force for snow

Risk of damage to body, axle or brake

f Always check the maximum speed rating on

tires for your Porsche.

components.

the tire sidewall on any tire on the vehicle.

The designation to be used for ZR tires is e.g.,

f Fit snow chains only to the rear wheels, and

f Never exceed the maximum speed rating of

265/40 ZR 18 (Z = code letter for radial tires for

only with the tire/rim combination listed in the

the tires.

speeds above 150 mph / 240 km/h).

Technical Data.

To ensure adequate clearance between chain

f Fit winter tires to both axles well before the

and body, Porsche recommends only the use

cold season begins.

of fine-link chains such as those approved by

Your authorized Porsche dealer will be pleased

Porsche.

to advise you.

f Follow instructions issued by the supplier of

Maintenance note

the chains.

We recommend fitting snow tires on the vehicle at

temperatures below 45 °F (7 °C) since the driving

In order to mount snow chains the vehicle must be

performance of summer tires is reduced at low

jacked up at the rear.

temperatures. Summer tires may be permanently

Different states and countries have varying statu-

damaged at extremely low temperatures.

tory requirements regarding maximum speed.

Winter tires lose their traction capability when their

Check with local authorities for possible restric-

tread depth falls below 5/32 in. (4 mm).

tions.

f Remove chains as soon as the roads are free

of ice and snow.

192 Practical Tips, Emergency Service

B TIN (Tire Identification Number)

Example: DOT xx xx xxxx xxxx

-

DOT

The DOT symbol indicates that the tires

comply with the requirements of the US

Department of Transportation and provides

information about:

-

first two-digit code means manufacturer’s

identification mark.

-

second two-digit code means tire size.

–

third four-digit code means tire type code.

–

fourth four-digit code means date of manufac-

ture.

If, for example, the last four numbers read

0204, the tire was produced in the 2nd week

Example of Inscription

-

ZR - code letter for radial tires for speeds

of 2004.

above 150 mph / 240 km/h

Inscription on radial tire

C

Tire ply composition and material

There are currently no standards concerning

The number of layers in the tread and sidewalls

tire strength at speeds above 150 mph

A Tire size

and their material composition.

(240 km/h).

Example: P 295/30 ZR 19 (100 Y)

D Maximum permissible inflation pressure

-

R - Belt type code letter for radial

– P - The tire is designed for Passenger vehicle.

-

19 - Indication of rim diameter in inches

The maximum permissible cold inflation pressure

This information is not included on all tires.

to which a tire can be inflated.

–

100 - Load capacity coefficient

-

295 - Indication of tire width in mm

f Do not exceed the permissible inflation

–

(Y) - Speed code letter

-

30 - Indication of tire height to tire width ratio

pressure.

in percent

-

XL (Extra Load) - Tire with increased load

rating

Practical Tips, Emergency Service

193

E Maximum Load rating

Tip on driving

The maximum load in kilograms and pounds can

Tires with a maximum speed rating that is lower

be carried by the tire. If you replace tires always

than the specified maximum vehicle speed may be

use a tire that has the same maximum load rating

mounted only if they bear an M+S identification on

as the factory installed tire.

the tire sidewall.

F Radial

f Please note that in addition to the winter tires,

all-season and all-terrain tires are also subject

The identification indicates if the tire has radial

to speed limits and bear this identification.

structure.

G Term of tubeless or tube tire

Inscription on light alloy wheels

Identification for tubeless tires.

Maintenance note

f Protect the valve inserts against soiling with

Speed code letter

valve caps.

The speed code letter indicates the maximum

Use only plastic valve caps.

permissible speed for the tire.

Soiled valve inserts can cause a gradual loss

This code letter is shown on the tire sidewall.

of air.

A - Rim width in inches

B - Rim-flange contour code letter

T

= up to 118 mph (190 km/h)

Note on operation

C - Symbol for drop-center rim

D - Rim diameter in inches

H = up to 131 mph (210 km/h)

f The rim width in inches A and the rim offset F

E - Double hump

are visible from the outside.

V

= up to 150 mph (240 km/h)

F - Rim offset in mm

The information is provided on the rear of the

W = up to 167 mph (270 km/h)

spokes. The rim width and rim offset are also

visible close to the tire valve in some cases.

Y = up to 186 mph (300 km/h)

(Y) = up to 186 mph (300 km/h) in accordance

with Y-tires. Speeds in excess of

186 mph (300 km/h) are possible with

a maximum load rating of 85 %

(confirmation of tire manufacturer in excess

of 186 mph (300 km/h) required).

194 Practical Tips, Emergency Service

The Gross Combined Weight Rating is the

Danger!

Loading Information

maximum total weight rating of vehicle, passen-

Risk of loss of control, damage to the vehicle

gers and cargo.

Definitions

and serious personal injury or death.

The Vehicle Capacity Weight - Load Limit - is

f

Never exceed the specified axle loads.

The Curb weight - actual weight of your vehicle -

the maximum total weight limit specified of the

Overloading can shorten the service life of the

vehicle weight including standard and optional

load (passengers and cargo) for the vehicle. This

tires and car, as well as lead to dangerous

equipment, fluids and emergency tools. This

is the maximum weight of passengers and cargo

vehicle reactions and long braking distances.

weight does not include passengers and cargo.

that can be loaded into the vehicle. This informa-

Damage due to overloading is not covered by

tion can be found on the tire pressure plate.

The Gross Vehicle Weight is sum of the curb

the vehicle warranty.

weight and the weight of passengers and cargo

The maximum loaded vehicle weight is the

combined.

sum of curb weight, accessory weight, vehicle

capacity weight and production options weight.

The Gross Vehicle Weight Rating is the

maximum total weight of vehicle, passengers,

The load rating is the maximum load that a tire

luggage and optional equipment.

is rated to carry for a given inflation pressure.

The Gross Axle Weight Rating is the maximum

The maximum load rating is the load rating for

load limit for the front or the rear axle. This infor-

a tire at the maximum permissble inflation

mation is located on the safety compliance sticker

pressure.

located in the driver’s side door jamb.

The cargo capacity is the permissible weight of

For determining the compatibility of the tire and

cargo, the substracted weight of passengers from

vehicle load capabilities:

the load limit.

f Please see the chapter “TECHNICAL DATA” on

f Never exceed the permissible limits.

Page 236.

The load capacity coefficient (e.g. “102”) is a

minimum requirement.

195

Practical Tips, Emergency Service

Determining the combined weight of

3.

Subtract the combined weight of the driver and

occupants and cargo:

passengers from XXX kilograms or XXX

pounds.

f Add the weight of all occupants and then add

the total luggage weight (figure).

4.

The resulting figure equals the available

amount of cargo and luggage load capacity.

Steps for determining correct load limit

For example, if the "XXX" amount equals

1. Locate the statement "The combined weight of

400 lbs. and there will be two - 150 lb passen-

occupants and cargo should never exceed XXX

gers in your vehicle, the amount of available

pounds" on your vehicle’s placard.

cargo and luggage load capacity is 100 lbs.

(400 - 300 (2 x 150) = 100 lbs.)

2. Determine the combined weight of the driver

and passengers that will be riding in your

5.

Determine the combined weight of luggage

vehicle.

and cargo being loaded on the vehicle. That

weight may not safely exceed the available

cargo and luggage load capacity calculated in

Step 4.

Example for determining the combined weight of

occupants and cargo

Vehicle Load Capacity

f The combined weight of occupants and cargo

should never exceed the weight shown on the

tire plate in the vehicle.

Please see the chapter “TIRE PRESSURE

PLATE” on Page 235.

f Never exceed the number of passengers

shown on the tire pressure plate in the vehicle.

196 Practical Tips, Emergency Service

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