Wheel Offset Calculator
Calculate how a change in wheel width and offset moves the wheel face in and out.
Compare Your Options And Get Clear Answers
Calculate how a change in wheel width and offset moves the wheel face in and out.
Wheel Offset Estimator
Enter your numbers below for an instant estimate.
How It Works
Key concepts behind this calculator
Enter Values
Fill in each field with your own numbers.
Calculate
Results update as you change the inputs.
Review
Read the breakdown and the explanation.
Adjust
Change values to compare scenarios.
Wheel Quick Guide
Typical values for reference.
| Old width | Old ET | New width / ET | Face moves |
|---|---|---|---|
| 7 | 40 | 7 / ET40 | 0.0 mm out |
| 7 | 40 | 8 / ET35 | 17.7 mm out |
| 7 | 40 | 9 / ET30 | 35.4 mm out |
| 7 | 40 | 10 / ET25 | 53.1 mm out |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Wheel Offset Calculator FAQ
Answers to common questions about this calculator.
The distance from the wheel mounting face to the wheel centreline.
Higher positive offset moves the wheel inward.
Outer edge = half width – offset; inner edge = half width + offset.
It is an estimate based on the inputs you enter. Check real quotes, labels or official guidance for important decisions.