Fitment calculator

Use our calculator to check the fitment of new wheels without having to mount them on your car.

Current setup

/ R
ET +

New setup

/ R
ET +
or reset calculations

Preview drawing

The strut shown in the diagram is for illustration only. Don't worry if it seems like the wheel is touching it!

Detailed specifications

Current New
Wheel diameter 631.9 mm 637.2 mm
Circumference 1985.2 mm 2001.8 mm
Poke 38.9 mm 78 mm
Inset 138.9 mm 138 mm
Ride height gain 0 mm +2.7 mm
Arch gap loss 0 mm -2.7 mm
Speedo at 100km/h 100 km/h 99.2 km/h
Speedo at 60 mph 60 mph 59.5 mph
Speedo error 0% -0.84%

Please remember that the dimensions of tires may deviate from standards, and driving on wheels for which the tires were not designed can be dangerous.