toolsPulse tools
Tire size / overall diameter
Width / aspect / rim → overall diameter and sidewall. For comparing a plus-size against the speedo.
Result
24.9 in overall
Sidewall 113 mm
How to use
- 1Enter width (mm), aspect %, rim inches.
- 2Read overall diameter.
- 3If you change size, expect speedometer error — this is geometry, not a shop.
FAQ
- Will this void a warranty?
- Ask the dealer. We only compute millimetres and inches.
- Load index / speed rating?
- Not in this tool. Those are on the sidewall letters.
- Do you keep my numbers?
- No. They stay in this tab until you refresh.
- Is this free?
- Yes. Ads may appear when you copy or run the main action.