Tire size Pressure specifications
in bar/PSI
Front: 275/40 R
21 107 V XL M
+S
2.7 / 39 -
Rear: 315/35 R
21 111 V XL M
+S
- 3.1 / 45
Emergency
wheel:
T 155/80 R 19
114 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
275/45 R 20
110 V XL M+S
2.8 / 41 3.3 / 48
Front: 275/40 R
21 107 Y XL
2.8 / 41 -
Rear: 315/35 R
21 111 Y XL
- 3.1 / 45
Front: 275/35 R
22 104 Y XL
3.1 / 45 -
Rear: 315/30 R
22 107 Y XL
- 3.4 / 49
Front: 275/40 R
21 107 V XL M
+S
3.0 / 44 -
Tire size Pressure specifications in
bar/PSI
Rear: 315/35 R
21 111 V XL M
+S
- 3.3 / 48
Emergency
wheel:
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
Maximum tire load
Maximum tire load is the maximum permissible
weight for which the tire is approved.
Locate the maximum tire load on the tire sidewall
and the Gross Axle Weight Rating – GAWR – on
the certification label on the driver door B-pillar.
Divide the tire load by 1.1. It must be greater
than one-half of the vehicle’s Gross Axle Weight
Rating – GAWR. Note, front vs. rear GAWR and
tire loads, respectively.
Speed letter
Designation Maximum speed
Q up to 100 mph/160 km/h
R up to 106 mph/170 km/h
S up to 112 mph/180 km/h
Seite 356
MOBILITY
Wheels and tires
356
Online Edition for Part no. 01405A10FB7 - VI/20
