Bmw 325XI Bedienungsanleitung PDF herunterladen (Seite 125)

125

Do not drive on a deflated – flat –

tire unless your vehicle is

equipped with Run Flat tires. 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.

The ultimate result can assume the

form of a sudden air loss.

Unusual vibrations encountered during

normal vehicle operation can indicate a

damaged tire or some other vehicle

malfunction. This type of problem can

be caused by contact with curbs, etc.

This is also true for irregularities in the

vehicle's handling characteristics, such

as a pronounced tendency to pull to the

left or right. Should this occur, respond

by immediately reducing your speed.

Proceed carefully to the nearest BMW

center 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 sud-

den and complete air loss, can endan-

ger the lives of both the vehicle occu-

pants and other road users.<

Tire replacement

To maintain good handling and vehicle

response, use only tires of a single

tread configuration from a single manu-

facturer.

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

Tread wear

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.<

Tread wear

The tread wear 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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