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Tire size Pressure specifications
in bar/PSI
Front: 255/50 R 19
107 W XL RSC
Rear: 285/45 R 19
111 W XL RSC
2.8 / 41
-
-
3.1 / 45
Front: 275/40 R 20
106 W XL RSC
Rear: 315/35 R 20
110 W XL RSC
3.0 / 44
-
-
3.2 / 46
Front: 275/40 R 20
106 V M+S XL RSC
Rear: 315/35 R 20
110 V M+S XL RSC
3.0 / 44
-
-
3.2 / 46
Front: 285/35 R 21
105 Y XL RSC
Rear: 325/30 R 21
108 Y XL RSC
3.0 / 44
-
-
3.4 / 49
Emergency wheel:
T 155/90 D 18 113
M
T 155/80 R 19 114
M
Speed up to a max. of
50 mph / 80 km/h
4.2 / 60
Tire identification marks
Tire size
245/45 R 18 96 Y
245: nominal width in mm
45: aspect ratio in %
R: radial tire code
18: rim diameter in inches
96: load rating, not for ZR tires
Y: speed rating, before the R on ZR tires
Speed letter
Q = up to 100 mph, 160 km/h
R = up to 106 mph, 170 km/h
S = up to 112 mph, 180 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
DOT code: DOT xxxx xxx 0115
xxxx: manufacturer code for the tire brand
xxx: tire size and tire design
0115: tire age
Tires with DOT codes meet the guidelines of
the U.S. Department of Transportation.
Tire age
DOT … 0115: the tire was manufactured in the
1st week of 2015.
Recommendation
Regardless of wear and tear, 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 Fed‐
eral 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
Seite 211
Wheels and tires Mobility
211
Online Edition for Part no. 01 40 2 963 464 - VI/15
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