Tire Identification Number; Uniform Tire Quality Grading; Tire Identification Marks; Tire Size - BMW 5 series sedan Owner's Manual

Mobility

Tire size

Specifications in
bar/PSI with cold
tires
245/45 R 18 96 Y
RSC
245/45 R 18 100 V
M+S XL RSC
V: 245/45 R 18 96 Y
RSC
H: 275/40 R 18 99
Y RSC
V: 245/40 R 19 94 Y
RSC
H: 275/35 R 19 96
Y RSC
V: 245/35 R 20 95 Y
XL RSC
H: 275/30 R 20 97
Y XL RSC

Tire identification marks

Tire size
255/50 R 19 103 Y
255: nominal width in mm
50: aspect ratio in %
R: radial tire code
19: rim diameter in inches
103: load rating, not for ZR tires
Y: speed rating, before the R on ZR tires
276
Wheels and tires
Pressure specifications
in bar/PSI
The values in ( ) apply if
the vehicle is equipped
with the high speed tun‐
ing feature
2.9 /42 3.4 / 49
2.9 /42 -
- 2.9 /42
2.9 /42 -
- 3.2 / 46
3.1 / 45 -
- 3.4 / 49
Online Edition for Part no. 01 40 2 607 879 - 09 11 490
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

DOT code: DOT xxxx xxx 3510
xxxx: manufacturer code for the tire brand
xxx: tire size and tire design
3510: tire age
Tires with DOT codes meet the guidelines of the
U.S. Department of Transportation.
Tire age
DOT ... 3510: the tire was manufactured in the
35th week in 2010.
Recommendation
Regardless of wear, replace tires at least every
6 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
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