Tire Identification Marks; Tire Age; Tire Size; Uniform Tire Quality Grading - BMW 2013 X1 Owner's Manual

Tire size

Front: 225/40 R 19 89 W RSC
Rear: 255/35 R 19 92 W RSC
Compact wheel:
T 135/80 R 17 102 M

Tire identification marks

Knowledge of the labeling on the side of the
tire makes it easier to identify and choose the
right tires.
Tire size
Example: 225/45 R 17 91 V
225: nominal width in mm
45: aspect ratio in %
R: radial tire code
17: rim diameter in inches
91: load rating, not for ZR tires
V: speed rating, before the R on ZR tires
Speed letter
Q = up to 100 mph/160 km/h
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 U.S. Department of Transportation.
DOT code:
DOT xxxx xxx 2313
xxxx: manufacturer code for the tire brand
xxx: tire size and tire design

2313: tire age

Online Edition for Part no. 01 40 2 911 269 - VI/13
Wheels and tires
Pressure specifications in
bar/PSI
3.0/44
-
Speeds of up to 50 mph/
80 km/h
4.2/60
Tire age
The tire manufacturing date is contained in the
tire identification mark: DOT ... 2313 means
that the tire was manufactured in the
week 23 of 2013.
BMW recommends that you replace all tires af‐
ter 6 years at most, even if some tires may last
for 10 years.

Uniform Tire Quality Grading

Quality grades can be found where applicable
on the tire sidewall between tread shoulder
and maximum section width. For example:
Treadwear 200 Traction AA
Temperature A

DOT Quality Grades

Treadwear
Traction AA A B C
Temperature A B C
Conform to Federal Safety Requirements
All passenger car tires must conform to
Federal Safety Requirements 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 conditions on a specified gov‐
ernment 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
Mobility
-
3.2/46
237