Mercedes-Benz GL-Class 2009 Owners Manual - Manual (Page 428)

Rims and tires
426
Same size tires
Model GL 450 GL 320 BlueTEC
Rims (light alloy) 8.5 J x 19 H2 8.5 J x 19 H2
Wheel offset 2.20 in (56 mm) 2.20 in (56 mm)
All-season tires 23 275/55 R19 111H M+S 24 —
Winter tires 23,25 265/55 R19 109H M+S. 265/55 R19 109H M+S. 26
All-terrain tires 23,25 275/55 R19 111H M+S 24 275/55 R19 111H M+S 24,26
Rims (light alloy) 8.5 J x 20 H2 8.5 J x 20 H2
Wheel offset 2.20 in (56 mm) 2.20 in (56 mm)
Summer tires 23 275/50 R20 109W 24 —
All season tires 23 — 275/50 R20 109H M+S MOExtended 24,27
23 Radial-ply tires
24 Must not be used with snow chains.
25 Not available as factory equipment.
26 Standard tire without run-flat characteristics. Equipping vehicle with TIREFIT is strongly recommended.
27 Must be used in conjunction with Tire Pressure Monitoring System (U.S. vehicles) or Run Flat Indicator (Canada vehicles) only.
Technical data