Tire Identification Marks; Uniform Tire Quality Grading; Tire Identification Number - BMW X5 xDrive35i Owner's Manual

Tire size
Front: 275/40 R 20 106 W XL RSC
Rear: 315/35 R 20 110 W XL RSC
Front: 285/35 R 21 105 W XL RSC
Rear: 325/30 R 21 108 W XL RSC
Compact wheel*
T 155/90 D 18 113 M
T 155/80 R 19 114 M
More details on the permissible load and weights, refer to page 292.

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: 255/55 R 19 107 V
255: nominal width in mm
55: aspect ratio in %
R: radial tire code
19: rim diameter in inches
107: 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 3410
xxxx: manufacturer code for the tire brand
xxx: tire size and tire design
258
Online Edition for Part no. 01 40 2 606 735 - 03 11 500
Pressure specifications in psi/kPa
36/250 -
- 36/250
36/250 -
- 36/250
60/420 60/420
3410: tire age
Tire age
The tire manufacturing date is contained in the
tire identification mark: DOT ... 3410 means that
the tire was manufactured in the week 34 of
2010.
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‐
44/300 -
- 44/300
45/310 -
- 45/310
60/420 60/420