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Jeep Tire Size Chart: 33, 35 and 37-Inch Tires in Metric
Guide · Updated October 27, 2026
Tire shops list sizes in metric (like 285/70R17) while Jeep owners talk in inches. This chart shows common sizes so you can match the two.
Common sizes
- About 33 inches: 285/70R17, 285/75R16, 285/65R18.
- About 34 inches: 285/75R17, 305/70R17.
- About 35 inches: 315/70R17, 35x12.50R17, 315/75R16.
- About 37 inches: 37x12.50R17, 345/75R17 (varies by brand).
Actual diameter varies by brand and tread; check the maker's spec sheet.
How to work it out
- Diameter = wheel size + 2 x (width x aspect ratio / 25.4).
- Example: 315/70R17 = 17 + 2 x (315 x 0.70 / 25.4), about 34.4 inches.
- Or use the Tire & Gear Calculator.
How much lift each size usually needs
- 33s: stock on most JLs and JKs. See 33s on a stock JL.
- 35s: leveling kit to 2.5-inch lift. See 35s on a 2.5-inch JL.
- 37s: about 3.5 inches. See 37s on a 3.5-inch JL.
Check what fits
Read how to read a tire size and browse all fit answers.
Gear that helps
- Digital tire pressure gauge — check pressures cold, before you drive.
- Portable 12V air compressor — air back up after the trail or adjust at home.
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Disclaimer: General information for enthusiasts, not a substitute for your owner’s manual, a licensed mechanic or your tire shop. Confirm fitment for your exact Jeep before buying.
FAQ
What metric size is a 35-inch tire?
315/70R17 is the most common, at roughly 34.4 inches.
Is 285/70R17 a 33?
Yes, about 32.7 inches, commonly called a 33.
Are all 35s the same size?
No; actual diameter varies by brand and tread.