BMW 2005 325xi Sports Wagon Manual Do Proprietário

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.

<

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.

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.

<

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.

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.

<

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.

Online Edition for Part-No. 01 41 0 157 605 - © 09/03 BMW AG