118
Tire condition
Tire replacement
Do not drive on a deflated – flat –
tire unless your vehicle is
To maintain good handling and vehicle
response, use only tires of a single
tread configuration from a single manu-
facturer.
depart significantly from the norm due
to variations in driving habits, service
practices and differences in road char-
acteristics and climate.
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 per-
mitted 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
flat tire or some other vehicle malfunc-
tion. This type of problem can be
caused by contact with curbs, etc. This
is also true for irregularities in the vehi-
cle's handling characteristics, such as a
pronounced 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.
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.
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.
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.<
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.<
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.
Temperature
The temperature grades are A, the
highest, B, and C, representing the
tire's resistance to the generation of
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.<
For example, a tire graded 150 would
wear one and one-half – 1
/2 – times as heat and its ability to dissipate heat
1
well on the government course as a tire when tested under controlled condi-
graded 100. The relative performance
of tires depends upon the actual condi-
tions of their use, however, and may
tions on a specified indoor laboratory
test wheel.
| Categories | BMW 3-Series Manuals, BMW Manuals |
|---|---|
| Tags | BMW 325Ci, BMW 330Ci, BMW E46 |
| Model Year | 2004 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
(3 votes, average: 5 out of 5)
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