Tire identification marks
Uniform Tire Quality Grading
Quality grades can be found where applicable
on the tire sidewall between tread shoulder and
maximum section width. For example:
Knowledge of the labeling on the side of the tire
makes it easier to identify and choose the right
tires.
Tread wear 200 Traction AA
Temperature A
Tire size
e.g.
245/45 R 18 96 W
DOT Quality Grades
Nominal width in mm
Tread wear
Aspect ratio inΞ
Traction AA A B C
Temperature A B C
Belted construction – radial
Rim diameter in inches
Carrying capacity ID-code
(not in ZR tires)
All passenger car tires must conform to
Federal Safety Requirements in addition
to these grades.<
Speed code letter
(in ZR tires before the R)
Tread wear
The tread wear grade is a comparative rating
based on the wear rate of the tire when tested
under controlled conditions on a specified gov-
ernment test course.
For example, a tire graded 150 would wear one
and one-half, 1γ, times as well on the govern-
ment course as a tire graded 100. The relative
performance of tires depends upon the actual
conditions of their use, however, and may
depart significantly from the norm due to varia-
tions in driving habits, service practices and dif-
ferences in road characteristics and climate.
Speed letter
T = up to 118 mph/190 km/h
H = up to 131 mph/210 km/h
V = up to 150 mph/240 km/h
W = up to 167 mph/270 km/h
Y = up to 186 mph/300 km/h
Tire Identification Number
Tires with DOT codes meet the guidelines of
the US Department of Transportation.
DOT code:
Traction
e.g.
DOT xxxx xxx 3406
The traction grades, from highest to lowest, are
AA, A, B, and C.
Manufacturer code
for tire make
Tire size and tire design
Tire age
These grades represent the tire's ability to stop
on wet pavement as measured under controlled
conditions on specified government test sur-
faces of asphalt and concrete. A tire marked C
may have poor traction performance.
Tire age
The traction grade assigned to this tire is
based on straight-ahead braking traction
tests, and does not include acceleration, cor-
nering, hydroplaning, or peak traction charac-
teristics.<
The tire's date of manufacture is indicated on
the sidewall:
DOT ... 3406 indicates that a tire was manufac-
tured in week 34 of the year 2006.
BMW recommends replacing all tires at least
every 6 years, even if some tires may last for
10
years.
202
Online Edition for Part no. 01 41 0 013 312 - © 02/07 BMW AG
| Categories | BMW 6-Series Manuals, BMW Manuals |
|---|---|
| Tags | BMW 645Ci, BMW E63, BMW E64 |
| Model Year | 2007 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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