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Tire size Pressure specifica‐
tions in bar/PSI
Specifications in bar/
PSI with cold tires
245/45 R 18 100 V M
+S XL A/S RSC
245/40 R 19 98 V M
+S XL A/S RSC
245/45 R 18 96 Y
RSC
245/45 R 18 100 V M
+S XL RSC
2.6 / 38 3.0 / 44
Front: 245/45 R 18 96
Y RSC
Rear: 275/40 R 18 99
Y RSC
2.6 / 38
-
-
2.6 / 38
Front: 245/40 R 19 94
Y RSC
Rear: 275/35 R 19 96
Y RSC
2.6 / 38
-
-
2.7 / 39
Front: 245/35 R 20 95
Y XL RSC
Rear: 275/30 R 20 97
Y XL RSC
2.7 / 39
-
-
3.1 / 45
With high-speed tuning feature
Tire size Pressure specifications
in bar/PSI
Specifications in
bar/PSI with cold
tires
245/45 R 18 96 Y
RSC
245/45 R 18 100 V
M+S XL RSC
2.9 /42 3.4 / 49
Tire size Pressure specifications
in bar/PSI
Front: 245/45 R 18
96 Y RSC
Rear:
275/40 R 18 99 Y
RSC
2.9 /42
-
-
2.9 /42
Front: 245/40 R 19
94 Y RSC
Rear:
275/35 R 19 96 Y
RSC
2.9 /42
-
-
3.2 / 46
Front: 245/35 R 20
95 Y XL RSC
Rear:
275/30 R 20 97 Y XL
RSC
3.1 / 45
-
-
3.4 / 49
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
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
Seite 198
Mobility Wheels and tires
198
Online Edition for Part no. 01 40 2 917 522 - II/13
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