Mercedes-Benz 2009 M-Class Operator's Manual page 405

Same size tires
Model ML 320 BlueTEC
ML 350
ML 350 (Sport Package)
ML 550
Rims (light alloy) 8 J x 18 H2
Wheel offset 2.36 in (60 mm)
—
All-season tires 35
255/55 R18 105H M+S.
Winter tires 35,37
35,37 255/55 R18 105H M+S
All-terrain tires
Rims (light alloy) —
Wheel offset —
35 —
All-season tires
35 Radial-ply tires
36 Must be used in conjunction with Tire Pressure Monitoring System (U.S. vehicles) or Run Flat Indicator (Canada vehicles) only.
37 Not available as factory equipment.
38 Canada only.
ML 350
ML 350 (Sport Package)
ML 550
8 J x 19 H2
2.36 in (60 mm)
255/50 R19 107H XL
(Extra Load) M+S
255/50 R19 107H XL
(Extra Load) M+S.
—
8.5 J x 20 H2
2.17 in (55 mm)
265/45 R20 108H XL
(Extra Load) M+S
Technical data
Rims and tires
ML 320 BlueTEC
8 J x 19 H2
2.36 in (60 mm)
255/50 R19 107H XL (Extra Load) M+S
36
MOExtended
255/50 R19 107H XL (Extra Load)
36
M+S. MOExtended
—
38
8.5 J x 20 H2
2.17 in (55 mm)
265/45 R20 108H XL (Extra Load) M+S
38
Z
403