The Jeep Gladiator is the ultimate overland truck. Pickup bed + Wrangler capability = perfect build platform. Here is the complete Gladiator tire upgrade guide from American Fusion Wheels.
Stock Gladiator Tire Sizes
| Trim | Stock Tire | Diameter |
|---|---|---|
| Sport / Sport S | 245/75R17 | ~31.5" |
| Overland / Willys | 255/75R17 | ~32" |
| Rubicon | 285/70R17 | ~33" |
| Mojave | 285/70R17 | ~33" |
Gladiator Tire Upgrade Path
Level 1: 33s (Stock on Rubicon)
Size: 285/70R17 or 33x12.50R17
Rubicon and Mojave have 33s from the factory. Sport, Willys, and Overland need a 2" spacer to fit 33s. Top picks: BFGoodrich KO2, Nitto Ridge Grappler.
Level 2: 35s with 2.5" Lift
Size: 35x12.50R17 or 315/70R17
The most popular Gladiator setup. Aggressive look without needing regears or extensive modifications. Top picks: Nitto Ridge Grappler, Mickey Thompson Baja Boss AT, Toyo RT Trail.
Level 3: 37s with 3.5" Lift
Size: 37x12.50R17
Requires a 3.5" lift, regears (4.88 recommended), and extended brake lines. Serious overland/trail build. Top picks: Nitto Trail Grappler, BFGoodrich KM3.
Popular Gladiator Builds
- The Overlander: 2.5" lift + 35x12.50R17 Toyo RT Trail + Method wheels + rooftop tent
- The Rock Crawler: 3.5" lift + 37x12.50R17 Nitto Trail Grappler + beadlocks + rock sliders
- The Daily: 2" level + 33x12.50R17 Nitto Ridge Grappler + Fuel wheels
Gladiator-Specific Tips
- Gladiators handle bigger tires better than Wranglers due to the longer wheelbase
- Regearing is recommended at 35s for V6 Gladiators (mandatory for 37s)
- The diesel Gladiator handles 35s without regearing due to the extra torque