Mercedes-Benz R-Class 2008 Owners Manual - Manual (Page 531)

530
Technical data
Rims and tires
Same size tires
Model R 320 CDI 4MATIC
R 350
1
R 350 4MATIC
R 320 CDI 4MATIC (Sport Package*)
R 350 (Sport Package*)
1
R 350 4MATIC (Sport Package*)
R 550 4MATIC
2
R 550 4MATIC (Sport Package*)
2
Rims (light alloy) 8 J x 18 H2 8 J x 19 H2
Wheel offset 2.64 in (67 mm) 2.64 in (67 mm)
All-season tires 3 255/55 R18 105H M+S 255/50 R19 107H XL (Extra Load) M+S
Winter tires
3,4
255/55 R18 105H M+S . 255/50 R19 107H XL (Extra Load) M+S .
1 USA only.
2 Canada only.
3 Radial-ply tires
4 Not available as factory equipment.