Vehicles & Transport calculator
What Snow Chain Size Do I Need?
Find snow-chain tyre size from tyre section width, tyre aspect ratio, and rim diameter.
Enter your measurements
What Snow Chain Size Do I Need? Measure tyre section width, tyre aspect ratio, and rim diameter first. This tool converts them into snow-chain tyre size so the recommendation stays tied to your actual dimensions or specification.
- Tyre section width — Required
- Tyre aspect ratio — Required
- Rim diameter — Required
Snow-chain tyre size
Enter the measurements above to calculate snow-chain tyre size.
How the calculation works
V12 calculation: return tyreSectionWidth, tyreAspectRatio and rimDiameter as the exact tyre profile; then use the current chain manufacturer's approved compatibility list.
Worked example
Example: Tyre section width = 60 cm; Tyre aspect ratio = 0.2; Rim diameter = 45.72 cm. Result: Use this measurement profile with the exact current manufacturer, brand or governing-body chart; no universal labelled size is assumed.
Before you decide
Measure the actual item, opening or body dimension involved. Use the current manufacturer, brand, league or governing-body specification for the final labelled size or rule; those external charts can change and are not treated as universal constants. For what snow chain size do i need, the limiting result on this page is snow-chain tyre size.
Runtime-specific source required. Use the exact current manufacturer, brand, model, regional conversion, league or governing-body chart/rule that applies to the user's actual product or competition; a single static URL would be misleading.
Frequently asked questions
What does the Snow Chain Size calculator tell me?
It returns snow-chain tyre size from the measurements entered on this page. The calculation is specific to snow chain size, so the result should be compared with the exact product or specification you are considering.
Which measurements should I take for snow chain size?
Measure tyre section width, tyre aspect ratio, rim diameter, candidate chain approved fit code. Use clear, usable dimensions rather than nominal room or product labels.
Should I round the snow-chain tyre size?
Keep the calculated value for comparison, then choose a real product that meets or stays within the returned snow-chain tyre size while allowing for the clearances, tolerances or ratings shown by its manufacturer.