BMW M3 CONVERTIBLE 2004 Bedienungshandbuch PDF herunterladen (Seite 119)

119

Do not drive on a deflated – flat –

tire. A flat tire greatly impairs

steering and braking response, and can

lead to complete loss of control over

the vehicle.

Avoid overloading the vehicle so that

the permitted load on the tires is not

exceeded. Overloading can lead to

overheating and internal tire damage.

This can result in a sudden loss of tire

inflation pressure.

Unusual vibrations encountered during

normal vehicle operation can indicate

tire failure or some other vehicle defect.

This type of problem can be caused by

contact with curbs, etc. This is also true

for irregularities in the vehicle's han-

dling characteristics, such as a pro-

nounced tendency to pull to the left or

right. Should this occur, respond by

immediately reducing your speed. Pro-

ceed carefully to the nearest BMW cen-

ter or professional tire center, or have

the vehicle towed in to have it, its

wheels or its tires inspected.

Tire damage, up to and including blow-

outs, can endanger the lives of both the

vehicle occupants and other road

users.<

Tire replacement

To maintain good handling characteris-

tics, only use a full set of tires of the

same brand and tread configuration.

Comply with the specified tire inflation

pressures, and be sure to have the

wheel and tire assembly balanced

every time you change a tire or wheel.

DOT quality grades

> Treadwear

> Traction AA A B C

> Temperature A B C

All passenger car tires must con-

form to Federal Safety Require-

ments in addition to these grades.<

Treadwear

The treadwear grade is a comparative

rating based on the wear rate of the tire

when tested under controlled condi-

tions on a specified government test

course.

For example, a tire graded 150 would

wear one and one-half – 1

1

/

2

– times as

well on the government course as a tire

graded 100. The relative performance

of tires depends upon the actual condi-

tions of their use, however, and may

depart significantly from the norm due

to variations in driving habits, service

practices and differences in road char-

acteristics and climate.

Traction

The traction grades, from highest to

lowest, are AA, A, B and C.

Those grades represent the tire's ability

to stop on wet pavement as measured

under controlled conditions on speci-

fied government test surfaces of

asphalt and concrete. A tire marked C

may have poor traction performance.

The traction grade assigned to

this tire is based on straight-

ahead braking traction tests, and does

not include acceleration, cornering,

hydroplaning, or peak traction charac-

teristics.<

Temperature

The temperature grades are A – the

highest – B and C, representing the

tire's resistance to the generation of

heat and its ability to dissipate heat

when tested under controlled condi-

tions on a specified indoor laboratory

test wheel.

Tire condition

OverviewControlsMaintenanceRepairsDataIndex

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