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Will 37-inch tires fit a Jeep TJ with a 3-inch lift?
Fitment answer · Updated October 27, 2026
Short answer
Not without big changes. A 3-inch TJ is short for 37s. Owners who make it work add high-clearance fenders, heavy trimming, bump stops, stronger steering and a deep regear; most go to 4 inches or more.
Shop the gear for this build ↓ Tires, deflators and a compressor picked for this setup.
What you usually need
- High-clearance or flat fenders and serious trimming.
- Bump stops set to stop tire contact at full stuff.
- Low-backspacing wheels, a stronger tie rod and drag link.
- Often a stronger front axle; the stock Dana 30 is weak with 37s.
Regearing
37s on a TJ usually call for 4.88 or 5.13 gears. Compare ratios in the Tire & Gear Calculator before you buy gears.
Compare
Gear for this build
- Mud-terrain tires (search) — Louder on the highway; buy for real mud use.
- Staun tire deflators — Repeatable trail pressures.
- VIAIR 88P portable compressor — Air back up before the highway.
- YUNPEAK 1.26" × 30' kinetic recovery rope — Bigger tires, bigger trails: carry recovery gear.
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FAQ
Do 37s fit a 3-inch TJ?
Only with major fender and bump stop work.
What lift is common for 37s on a TJ?
Often 4 inches or more.
Do I need to regear?
Yes.
Check your numbers
Use the free Tire & Gear Calculator to see speedometer error, highway RPM and a regear target, or ask TekJeep AI on the homepage with your year, trim, lift and wheel specs.
Related guides: All-terrain & mud-terrain tires · JK 2.5" lift overview
More fitment answers: 33s on a TJ Wrangler · 35s on a TJ Wrangler · 31s on a stock TJ · 33s on a 2" TJ · 35s on a 3" TJ · 33s on a stock TJ Rubicon · 35s on a TJ Rubicon · 35s on a 2" TJ
Fitment disclaimer: Clearance depends on exact tire size, wheel specs, suspension and how hard you flex. Confirm with your tire shop or installer before buying.
Tire size how-tos: How to read a tire size · Bolt pattern & backspacing · Regearing for bigger tires · Tire pressure after upsizing · Speedometer error · Rubbing fixes