31 inch tire diameter cross-reference

Overall diameter

12 curated TireFitLab seed sizes round to about 31 inches overall diameter. Use the table to find similar-height sizes, then compare exact dimensions before fitting.

FAQ

Overall diameter
12 curated TireFitLab seed sizes round to about 31 inches overall diameter. Use the table to find similar-height sizes, then compare exact dimensions before fitting.
What should I verify before using this information?
Use TireFitLab values as a sizing reference, then verify the vehicle handbook, tire placard, rim compatibility, load rating, and physical clearance before fitting.
Candidate size Overall diameter Diameter difference Section width Rim Compare
31x10.50R15 31.00 in +4.1 mm 267 mm 15 in Open calculator
265/70R16 30.61 in -5.9 mm 265 mm 16 in Open calculator
31x10.50R16 31.00 in +4.1 mm 267 mm 16 in Open calculator
245/70R17 30.50 in -8.5 mm 245 mm 17 in Open calculator
265/65R17 30.56 in -7.0 mm 265 mm 17 in Open calculator
245/65R18 30.54 in -7.6 mm 245 mm 18 in Open calculator
265/60R18 30.52 in -8.1 mm 265 mm 18 in Open calculator
285/60R18 31.46 in +15.9 mm 285 mm 18 in Open calculator
275/55R19 30.91 in +1.8 mm 275 mm 19 in Open calculator
285/50R20 31.22 in +9.7 mm 285 mm 20 in Open calculator
275/45R21 30.74 in -2.4 mm 275 mm 21 in Open calculator
285/40R22 30.98 in +3.5 mm 285 mm 22 in Open calculator

Seed pages are limited to the public TireFitLab size corpus. The long tail stays gated until demand data supports expansion.

How to use diameter bands

Diameter-band pages group popular TireFitLab seed sizes by rounded overall diameter. The group is useful for finding similar-height candidates, but the exact calculator should still be used before any purchase or fitment decision.

Related references

Seasonal check

Planning a long summer drive?

Use the budget and running-cost tools before a trip, especially if the current tyres are worn or the replacement size changes diameter.

Estimate tyre budget
Last reviewed: 2026-06-28
What changed
  • Added curated overall-diameter cross-reference seed pages.