When mounting the Caliber Power Grip 23RE and Caliber Traction 404RE on two wheels, no spacer is needed. To ensure that no dirt or sand can come between the two wheels, Caliber Tyres & Wheels has developed a special rim. The rim offers a great deal of stability because it has been reinforced at the most important points. The Caliber Special wheel rim has the size 900×22.5 and is 10 holes.

The special rim makes it easy to mount the wheel on the axle. The Caliber Special wheel rim is standard delivered in the colours; black, Atlas grey, Volvo yellow and Liebherr grey. It is possible to have the rims painted in any colour you want for a small extra charge.