Examples
Examples
Try the starting example
- Common rim reference diameter (mm)
- 440
- Input convention: angle or distance
- angle
- Total pair toe angle degrees OR total pair front/rear difference mm
- 0.2
- Total pair toe angle (degrees)
- 0.2
- Per-wheel symmetric toe angle (degrees)
- 0.1
- Total pair nominal front/rear distance difference (mm)
- 1.535889
- Per-wheel nominal distance contribution (mm)
- 0.767944
Try another scenario
- Common rim reference diameter (mm)
- 440
- Input convention: angle or distance
- distance
- Total pair toe angle degrees OR total pair front/rear difference mm
- 2
- Total pair toe angle (degrees)
- 0.260436
- Per-wheel symmetric toe angle (degrees)
- 0.130218
- Total pair nominal front/rear distance difference (mm)
- 2
- Per-wheel nominal distance contribution (mm)
- 1
Calculation method
Calculation method
Total pair toe angle (degrees)
Angle mode uses supplied total; distance mode uses 2×asin(total difference/(2×reference diameter)).
Per-wheel symmetric toe angle (degrees)
Half total angle, assuming equal symmetric toe on both wheels.
Total pair nominal front/rear distance difference (mm)
2×reference diameter×sin(total angle/2).
Per-wheel nominal distance contribution (mm)
Half total pair distance, preserving toe-in/toe-out sign.
Symbols and units
- a
- Common rim reference diameter (mm)
- b
- Input convention: angle or distance
- c
- Total pair toe angle degrees OR total pair front/rear difference mm
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- A fixed-reference symmetric two-wheel geometric convention, not an alignment specification or adjustment instruction. Actual wheel measurement conventions, camber, suspension and manufacturer targets are external.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.
Further reading
OpenStax: ratios, unit rates and supplied measurement arithmetic ↗
Background reading; this does not imply endorsement or independent review of SumFizz.