Mercedes-Benz 2008 C-Class Operator's Manual page 471

Technical data
Rims and tires
Model C 350 Sport*
C 350 4MATIC Sport*
Front axle:
AMG rims (light alloy) 7.5 J x 17 H2
Wheel offset 1.85 in (47 mm)
2
Summer tires –
2
All-season tires 225/45 R17 91H M+S
Rear axle:
AMG rims (light alloy) 8.5 J x 17 H2
Wheel offset 2.28 in (58 mm)
2,3
Summer tires –
2
All-season tires 245/40 R17 91H M+S
1
Canada only.
2
Radial-ply tires.
3
Must not be used with snow chains.
470
C 300 Sport*
1
C 300 4MATIC Sport*
C 350 Sport*
C 350 4MATIC Sport*
8 J x 18 H2
1.97 in (50 mm)
225/40 ZR18 92Y XL (Extra Load)
–
8.5 J x 18 H2
2.13 in (54 mm)
255/35 ZR18 94Y XL (Extra Load)
–
1