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Will 37-inch tires fit a Jeep Gladiator with a 3.5-inch lift?
Fitment answer · Updated October 27, 2026
Short answer
Often yes, with supporting parts. Many Gladiator owners run 37s on a 3.5-inch lift with high-clearance flares or trimming, bump stops set for the tire, and wheels with low backspacing. Regearing is strongly recommended.
Shop the gear for this build ↓ Tires, deflators and a compressor picked for this setup.
What you usually need
- A 3.5-inch lift.
- High-clearance flares or careful trimming.
- Bump stops sized for 37s, wheels with about 4.5-inch backspacing or less, and an alignment.
Regearing
With 37s on a Gladiator, gears around 4.88 or 5.13 are common, especially if you tow or haul. 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.
- Digital tire pressure gauge — For airing down and back up accurately.
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FAQ
Is 3.5 inches enough lift for 37s on a Gladiator?
Usually, with flares or trimming and bump stops.
Do I need to regear?
Yes, in most cases.
Will 37s rub at full flex?
They can without correct bump stops; see the bump stop guide.
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: 35s on a Gladiator JT · 33s on a stock Gladiator JT · 37s on a Gladiator JT · 35s on a 2.5" Gladiator · 35s on a stock Mojave · 35s on a stock Gladiator Rubicon · 33s on a leveled Gladiator · 35s on a leveled Gladiator
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