Mercedes-Benz 2011 GLK-Class Operator's Manual page 291

Tires of the same dimensions
i BA: both axles
Model
R17 BA Alloy wheels
Offset
Winter tires
R19 BA Alloy wheels
Offset
All-weather tires
R20 BA Alloy wheels
Offset
All-weather tires
Spare wheel
i Please note that the tire pressure of the spare wheel differs from the tire pressure of the
other wheels.
i The specified tire pressure is printed in yellow on the emergency spare wheel.
Collapsible emergency spare wheel
R17 Alloy wheels
Offset
Tires
Tire pressure
USA only.
34
35 Not available as standard or optional equipment from the factory.
36 Use of snow chains not permitted.
GLK 350
GLK 350 4MATIC
7.5 J x 17 H2
1.87 in (47.5 mm)
35 235/60 R17 102 H M+Si
7.5 J x 19 H2
1.85 in (47 mm)
235/50 R19 99 H M+S
8.5 J x 20 H2
1.77 in (45 mm)
235/45 R20 100 H XL M+S
36
All models
6 B x 17 H2
0.98 in (25 mm)
185/75-17 98 P
280 kPa (2.8 bar/41 psi)
Wheel/tire combinations
34
289
Z