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Tire size Pressure specifications
in bar/PSI
Front: 245/45 R 19
98 Y RSC
Rear: 275/40 R 19
101 Y RSC
2.5 / 36
-
-
2.5 / 36
Front: 245/40 R 20
99 Y XL RSC
Rear: 275/35 R 20
102 Y XL RSC
2.7 / 39
-
-
2.7 / 39
Front: 245/35 R 21
96 Y XL RSC
Rear: 275/30 R 21
98 Y XL RSC
3.0 / 44
-
-
3.0 / 44
Emergency wheel:
T 135/80 R 18 104
M
Speed up to a max. of
50 mph / 80 km/h
4.2 / 60
With high-speed tuning feature
Tire size Pressure specifications
in bar/PSI
Specifications in
bar/PSI with cold
tires
245/50 R 18 100
H M+S RSC
2.5 / 36 2.7 / 39
245/45 R 19 102
V M+S XL RSC
2.9 /42 3.1 / 45
Front:
245/45 R 19 98 Y
RSC
Rear: 275/40 R 19
101 Y RSC
2.7 / 39
-
-
2.7 / 39
Tire size Pressure specifications
in bar/PSI
Front:
245/40 R 20 99 Y
XL RSC
Rear: 275/35 R 20
102 Y XL RSC
3.0 / 44
-
-
3.0 / 44
Front:
245/35 R 21 96
Y XL RSC
Rear: 275/30 R 21
98 Y XL RSC
3.3 / 48
-
-
3.3 / 48
Emergency wheel:
T 135/80 R 18
104 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
Seite 256
Mobility Wheels and tires
256
Online Edition for Part no. 0140 2 964 330 - VI/15
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