Compare a new set of wheels against your current ones to see how the fitment changes at the fender and at the suspension. Offset, marked as ET in millimeters, is the distance from the wheel mounting face to its center line, and combined with the width it decides how far the wheel sits in or out. This calculator takes both wheels width and offset, then reports how much the outer edge moves toward the fender and how much the inner edge moves toward the suspension. Getting this wrong causes rubbing, poor handling, or extra strain on wheel bearings, so it is worth checking before you buy. A lower offset or wider wheel pushes the tire outward for a more aggressive stance, but only if there is clearance. All measurements are computed locally in your browser.
Offset is the distance from the wheel's mounting face to its centerline, usually given in millimeters as an ET value.
A lower offset pushes the wheel outward toward the fender, while a higher offset pulls it inward toward the hub.
It shows how far the new wheel moves at the fender and at the hub compared with your current wheel.
Compare a new set of wheels against your current ones to see how the fitment changes at the fender and at the suspension. Offset, marked as ET in millimeters, is the distance from the wheel mounting face to its center line, and combined with the width it decides how far the wheel sits in or out.
Yes. Wheel Offset Calculator is completely free, with no sign-up and no usage limits.
Yes. Wheel Offset Calculator runs in any modern web browser. There is nothing to download or install.
Yes. Wheel Offset Calculator runs entirely on your device in your browser, so nothing you enter is uploaded to a server.