275/70R18 equivalent tire sizes
Close match
33x12.50R15 is the closest TireFitLab seed equivalent for 275/70R18 in the opposite size format, with an overall-diameter difference of -0.47%. Treat it as a conversion starting point, not a vehicle fitment guarantee.
- 33x12.50R15 is the closest TireFitLab seed equivalent for 275/70R18 in the opposite size format, with an overall-diameter difference of -0.47%.
- Treat it as a conversion starting point, not a vehicle fitment guarantee.
FAQ
- Close match
- 33x12.50R15 is the closest TireFitLab seed equivalent for 275/70R18 in the opposite size format, with an overall-diameter difference of -0.47%. Treat it as a conversion starting point, not a vehicle fitment guarantee.
- 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 | Format | Overall diameter | Section width | Diameter difference | Compare |
|---|---|---|---|---|---|
| 275/70R18 | metric | 33.16 in | 275 mm | 0% | Open calculator |
| 33x12.50R15 | flotation | 33.00 in | 318 mm | -0.47% | Compare |
| 33x12.50R16 | flotation | 33.00 in | 318 mm | -0.47% | Compare |
| 33x12.50R18 | flotation | 33.00 in | 318 mm | -0.47% | Compare |
| 35x12.50R17 | flotation | 35.00 in | 318 mm | +5.56% | Compare |
| 35x12.50R18 | flotation | 35.00 in | 318 mm | +5.56% | Compare |
| 35x12.50R20 | flotation | 35.00 in | 318 mm | +5.56% | Compare |
| 31x10.50R15 | flotation | 31.00 in | 267 mm | -6.51% | Compare |
| 31x10.50R16 | flotation | 31.00 in | 267 mm | -6.51% | Compare |
Seed pages are limited to the public TireFitLab size corpus. The long tail stays gated until demand data supports expansion.
How to use equivalent sizes
Equivalent size pages translate between metric and flotation-style tire markings by comparing computed overall diameter and section width. A close equivalent can still be unsuitable if load rating, rim width, offset, vehicle clearance or local approval rules do not match.
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.
What changed
- Added curated metric/flotation equivalent-size seed pages.