Jeep Wrangler
Tire Size Guide

Complete tire sizing guide for all Jeep Wrangler models. From factory sizes to massive 40" mud-terrains - find the perfect fit for your off-road adventures.

All
Models Covered
30+
Tire Options
33"-40"
Tire Range
0"-6"
Lift Guide

Factory Tire Sizes by Wrangler Model

JL

Wrangler JL (2018-Present)

The latest generation Wrangler with improved on-road manners and serious off-road capability. Available in 2-door and 4-door (Unlimited) configurations.

Sport / Sport S
Factory Size:
245/75R17
~31.5" diameter • 9.6" width
Specifications:
• Load Index: 112
• Speed Rating: S
• Wheel: 17×7.5"
• Backspacing: 6.25"
Rubicon
Factory Size:
285/70R17
~32.7" diameter • 11.2" width
Specifications:
• Load Index: 121
• Speed Rating: Q
• Wheel: 17×7.5"
• Backspacing: 6.25"
🆕 JL 392 (6.4L V8):
Factory 285/70R17 (32.7") with 17x8" beadlock-capable wheels. Can fit 35" tires with minimal trimming due to high-clearance fenders.
JK

Wrangler JK (2007-2018)

The most popular used Wrangler with massive aftermarket support. Known for excellent mod-friendliness and proven reliability.

X / Sport / Sahara
Factory Size:
255/75R17
~32.0" diameter • 10.0" width
Alternate: 225/75R16 (30.3") on some early models
Rubicon
Factory Size:
255/75R17
~32.0" diameter • 10.0" width
BF Goodrich KM2 or similar MT tire standard on Rubicon
TJ

Wrangler TJ (1997-2006)

Classic body style with coil spring suspension upgrade. Highly sought after for off-road builds due to compact size and simplicity.

Standard / Rubicon
Factory Size:
225/75R15
~28.3" diameter • 8.9" width
Some models came with 30x9.50R15 (30.0") or 31x10.50R15 (31.0")
YJ

Wrangler YJ (1987-1996)

The original Wrangler with square headlights and leaf spring suspension. Excellent platform for vintage off-road builds.

Base / S / Sahara
Factory Size:
215/75R15
~27.7" diameter • 8.5" width
Optional: 30x9.50R15 (30.0") on some trim levels

Popular Tire Upgrade Sizes

33"

33-Inch Tires

Recommended Sizes:
285/75R1733.8" actual
285/70R1732.7" actual
33x10.50R1733.0" floatation
33x12.50R1733.0" floatation
Fitment Requirements:
  • ✅ JL: Stock fitment (minimal rubbing)
  • ✅ JK: Stock or 1.5"-2" leveling kit
  • ✅ TJ: 2"-2.5" lift recommended
  • ✅ YJ: 2.5"-3" lift required
  • ⚠️ May require minor fender trimming on full stuff
💡 Best For:

Daily drivers who want improved ground clearance without major modifications. Perfect balance of off-road capability and on-road manners. No gearing changes needed on most models.

35"

35-Inch Tires

Recommended Sizes:
315/70R1734.4" actual
35x12.50R1735.0" floatation
35x12.50R2035.0" floatation
315/75R1634.6" actual
Fitment Requirements:
  • ✅ JL: 1.5"-2.5" lift + minor trimming
  • ✅ JK: 2.5"-3.5" lift + fender trimming
  • ✅ TJ: 3.5"-4" lift + trimming
  • ✅ YJ: 4"+ lift + extensive trimming
  • ⚠️ Re-gearing to 4.88 or 5.13 highly recommended
💡 Best For:

Serious off-roaders wanting maximum rock crawling ability. Popular choice for overlanding and trail rigs. Expect reduced MPG (15-20% loss) without re-gearing. Upgrading to 4.88 or 5.13 gears restores drivability.

37"

37-Inch Tires

Recommended Sizes:
37x12.50R1737.0" floatation
37x13.50R1737.0" floatation
375/55R2037.0" metric
Fitment Requirements:
  • ✅ JL: 3.5"-4" lift + high clearance fenders
  • ✅ JK: 4"-5" lift + flat fenders
  • ✅ TJ: 5"+ lift + extensive mods
  • ⚠️ Re-gearing to 5.13 or 5.38 REQUIRED
  • ⚠️ Upgraded axles, steering, brakes recommended
💡 Best For:

Dedicated rock crawlers and extreme off-road builds. Requires significant investment in supporting mods (gears, axles, suspension, steering). Not recommended for daily driving. Expect 25-30% MPG loss even with proper gearing. Budget $5,000-$15,000 for full build.

Wheel Size & Backspacing Guide

Recommended Wheel Sizes

15"
8"-10" width
TJ, YJ, classic builds
Backspacing: 3.75"-4.5"
17"
8"-9" width
JK, JL stock & mild lifts
Backspacing: 4.5"-5.5"
17"
9"-10" width
JK, JL with 35"+ tires
Backspacing: 3.5"-4.5"
20"
9"-10" width
JL luxury / street builds
Backspacing: 4.5"-5.5"

Backspacing Explained

What is Backspacing?

Backspacing is the distance from the wheel's mounting surface to the back edge of the rim. Lower backspacing pushes wheels outward, improving stability and clearance but may cause rubbing on fenders.

Common Backspacing Ranges:
Stock Wheels:5.5"-6.25"
Mild Stance (33"):4.5"-5.0"
Aggressive (35"+):3.5"-4.5"
Extreme Wide:3.0"-3.5"
Pro Tip:For 35" tires, 4.5" backspacing on a 17x9 wheel is the sweet spot - aggressive stance without extensive trimming. Beadlock wheels (3.5" BS) require fender modifications.

Lift Kit Requirements by Tire Size

Tire SizeJL (2018+)JK (2007-2018)TJ (1997-2006)Re-Gear
33" (285/70R17)StockStock - 2"2" - 2.5"Optional
33" (33x10.50R17)1" - 1.5"1.5" - 2"2.5"Optional
35" (315/70R17)1.5" - 2.5"2.5" - 3.5"3.5" - 4"Recommended
35" (35x12.50R17)2.5" - 3"3" - 3.5"3.5" - 4"Recommended
37" (37x12.50R17)3.5" - 4"4" - 5"5"+REQUIRED
40" (40x13.50R17)5"+6"+6"+REQUIRED
📐 Leveling Kit vs Full Lift:
  • Leveling Kit (1"-2.5"): Raises front to match rear, perfect for 33" tires
  • Full Lift (2.5"+): Raises entire vehicle, needed for 35"+ tires
  • Long-Arm Lift (4"+): Improves ride quality on tall lifts, recommended for 37"+
🔧 Re-Gearing Guide:
  • Stock-33": 3.21, 3.73 gears OK
  • 33"-35": 4.56 or 4.88 recommended
  • 35"-37": 4.88 or 5.13 required
  • 37"+: 5.13 or 5.38 required for V6, 4.88-5.13 for V8

Calculate Your Jeep Tire Upgrade

Use our tire size calculator to compare your current tires with upgrade options. See exact diameter differences, speedometer error, and expected ground clearance gains.

🧮 Launch Tire CalculatorBrowse More Guides

Frequently Asked Questions

What is the largest tire I can fit on a stock Jeep Wrangler?
It depends on the model. JL Wranglers can typically fit 33" tires (285/70R17) with no modifications. JK models can fit 33" with minor rubbing at full flex. TJ and YJ models are limited to approximately 31" on stock suspension. For best fitment without trimming, stick to factory tire sizes or add a 1.5-2" leveling kit for 33" tires.
Do I need to re-gear if I install 35-inch tires?
Highly recommended but not strictly required. With 35" tires and stock gears (3.73 or 4.10), you'll experience sluggish acceleration, reduced towing capacity, and 15-20% worse fuel economy. Re-gearing to 4.88 or 5.13 ratio restores factory performance and actually improves off-road crawl capability. Budget $1,500-$2,500 for professional installation of gears in both axles.
What backspacing should I use for 35-inch tires on my Wrangler?
For 35" tires on a 17x9" wheel, 4.5" backspacing is ideal for most builds - provides aggressive stance without excessive fender trimming. If running beadlock wheels (typically 3.5" backspacing), expect to trim inner fender liners and possibly install flat fenders. Stock backspacing (5.5-6.25") will push tires inward and cause rubbing on suspension components.
Can I run 37-inch tires on a 2-door Jeep Wrangler?
Yes, but it requires significant modifications. You'll need a minimum 3.5-4" lift (JL) or 4-5" lift (JK), flat fenders or high-clearance fenders, fender liner trimming, and re-gearing to 5.13 or 5.38. The shorter wheelbase of 2-door models actually handles 37" tires better for rock crawling (better breakover angle) but worse for highway stability compared to 4-door Unlimited models.
What is the difference between Rubicon tires and standard Wrangler tires?
Rubicons come with larger, more aggressive tires from the factory. JL Rubicons get 285/70R17 (32.7") BFGoodrich KO2 all-terrains, while base Sports get 245/75R17 (31.5"). JK Rubicons came with 255/75R17 (32.0") BFG KM2 mud-terrains. The wider tires on Rubicons (285 vs 245mm) provide better traction and ground clearance but slightly reduced fuel economy. Rubicon wheels also have better backspacing (6.25") for off-road use.
How does tire size affect my Jeep's speedometer accuracy?
Larger tires make your speedometer read slower than actual speed because the tire rotates fewer times per mile. With 33" tires (vs stock 31.5"), your speedometer will read about 5% slow (shows 60 mph when actually going 63 mph). With 35" tires, it reads 10-12% slow. Most Jeeps allow speedometer calibration via TPMS sensor programming or aftermarket programmers like Tazer/JScan for $200-$400.