Mercedes-Benz SLK-Class 2008 Owner's Manual page 257

Technical data
Vehicle weights
Maximum permissible front axle
load
Maximum permissible rear axle
load
Maximum roof load
Maximum luggage compartment
load
254
SLK 200 KOMPRESSOR
840 kg
935 kg
50 kg
100 kg
SLK 280 SLK 350
900 kg 910 kg
940 kg 940 kg
50 kg 50 kg
100 kg 100 kg
SLK 55 AMG
910 kg
940 kg
50 kg
100 kg