Target Tire Width Finder

This finder works by filtering all common sizes down to one section width and sorting them by aspect ratio and rim. It shows every height you can reach at that width.

1. Enter the width you want, for example 245 mm (9.65 in).
2. Read every common 245 size from 245/35R19 to 245/75R16.
3. Compare each size's diameter and sidewall.
4. Pick the size whose diameter matches your vehicle.

The formula fixes Width and computes D = (Rim × 25.4) + 2 × (Width × Aspect Ratio ÷ 100) for each listed size.

Worked example: 245/55R19 has a 134.75 mm (5.31 in) sidewall and a 752.1 mm (29.61 in) diameter.

The conversion table lists 13 common 245 mm sizes with diameter, sidewall and width. Diameters run from 25.68 in (245/45R17) to 30.50 in (245/70R17).

Every row has the same 9.65 in width. Sidewall height grows 0.48 in (12.25 mm) with each 5-point aspect step.

The Target Tire Width Finder is a tool that lists every common tire size at one chosen section width. It starts from width, which drivers often choose first for grip, looks or rim fit.

The finder shows that one width covers cars, crossovers and trucks. A 245 mm tire fits sport sedans in the 35 and 40 series and pickups in the 70 and 75 series.

This finder has 4 uses: grip planning, rim matching, look matching and fleet standardizing.

• Plan grip: Lock a width that suits the contact patch you want.
• Match rims: Keep a width inside your rim's approved range.
• Match the look: Keep the same tread width across trims.
• Standardize fleets: Use one width across several vehicles.