Calculating The Wheel Offset for Your Mini or Sprite
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Wheels, Offset, and How to Calculate Fitment
Check for clearance difficulties when installing aftermarket or custom wheels before proceeding with the installation.
Incorrect fitment or rubbing will cause your tires and bearings to wear out early, as well as other suspension components to fail or wear sooner than they should.
Offset is the distance in millimeters between the centerline of the wheel and the mounting face of the wheel.
The Offset, or "ET" (Einpress Tiefe translates to Press Depth in German),
It is possible to have a positive offset when the hub mounting surface is located on the street side (the side that you can see) of the rim's center line. This type of offset will be seen on the majority of factory rims.
If the hub mounting surface is on the brake side of the centerline of the rim, it is considered a negative offset or "deep dish".
WARNING: Incorrect offset can seriously affect vehicle performance.
|Rim Measurements||Positive Offset||Negative Offset|
This stock 4.5" x 10" Mini Cooper S alloy wheel has a POSITIVE Offset of 35mm.
This Minilite 6" x 10" Mini Cooper S wheel has a POSITIVE Offset of 15mm.
This Super Trax 7" x 13" Mini Cooper S wheel has a POSITIVE Offset of 7mm.
This Alleycat 7" x 13" Mini Cooper S wheel has a NEGATIVE Offset of 7mm.
a wheel with NEGATIVE (-) 15mm OFFSET or ET would be shown as ET-15