Your Gladiator’s 37-inch tire choice directly affects its rock-crawling capability and on-road manners. Finding the Best 37 Inch Tires For Jeep Gladiator is not just about size; it’s about matching rubber to your specific driving style. Whether you tackle Moab slickrock or daily commute on the highway, the wrong tire can ruin your experience.
This guide breaks down the top contenders for 2024. We’ll cover traction, durability, road noise, and weight. By the end, you’ll know exactly which set belongs on your Gladiator.
Best 37 Inch Tires For Jeep Gladiator
Let’s get straight to the top picks. These tires have been tested by off-road enthusiasts and daily drivers alike. Each one excels in a specific area, so consider your primary use case.
Nitto Ridge Grappler
The Nitto Ridge Grappler is a hybrid tire that balances off-road aggression with highway comfort. It’s one of the most popular choices for Gladiator owners who want a do-it-all tire.
- Traction: Excellent in mud, sand, and rocks. The staggered shoulder lugs provide grip in loose terrain.
- Road Noise: Surprisingly quiet for an aggressive tread. The variable pitch pattern reduces drone on the highway.
- Durability: Reinforced sidewalls resist cuts and punctures. The tread compound lasts 40,000+ miles with proper rotation.
- Weight: Around 75 pounds per tire. This is heavier than some competitors, which can affect acceleration and fuel economy.
If you drive your Gladiator daily and hit trails on weekends, the Ridge Grappler is a solid choice. It handles rain well and doesn’t vibrate at highway speeds.
BFGoodrich KO2 All-Terrain
The BFGoodrich KO2 is a legend in the off-road world. It’s the tire that comes stock on many Jeep Wranglers and Gladiators. In 37-inch size, it offers proven reliability.
- Traction: Great on rocks and gravel. The CoreGard technology protects the sidewall from sharp edges.
- Road Noise: Low hum at highway speeds. It’s one of the quietest 37-inch tires available.
- Durability: Extremely tough. The KO2 can handle abuse from rocks, roots, and debris without chunking.
- Weight: Around 68 pounds. This is lighter than many mud-terrain options, which helps maintain acceleration.
The KO2 is ideal for Gladiators that see mostly pavement but need occasional off-road capability. It’s not the best in deep mud, but it excels in snow and rain.
Toyo Open Country M/T
For serious off-roaders, the Toyo Open Country M/T is a top contender. It’s a dedicated mud-terrain tire that doesn’t compromise on traction.
- Traction: Unmatched in mud and deep sand. The tread pattern self-cleans to maintain grip.
- Road Noise: Noticeably louder than hybrid or all-terrain tires. Expect a constant hum at highway speeds.
- Durability: Built tough with a 3-ply sidewall. This tire can take a beating on the trail.
- Weight: Around 78 pounds. Heavy, but the trade-off is superior off-road performance.
If you frequently wheel in extreme conditions, the Toyo M/T is worth the noise and weight. It’s a tire that inspires confidence on the trail.
Cooper Discoverer STT Pro
The Cooper Discoverer STT Pro is another mud-terrain option that offers excellent traction and durability. It’s designed for serious off-road use but has some on-road manners.
- Traction: Aggressive tread digs into mud and rocks. The Armor-Tek3 construction adds strength.
- Road Noise: Moderate for a mud-terrain. It’s quieter than the Toyo M/T but louder than the Ridge Grappler.
- Durability: Very tough. The sidewall is reinforced to resist punctures and cuts.
- Weight: Around 74 pounds. Comparable to other mud-terrain options.
The STT Pro is a good middle ground for those who want mud-terrain capability without excessive noise. It’s a reliable choice for Gladiator owners who hit the trails regularly.
Mickey Thompson Baja Boss M/T
The Mickey Thompson Baja Boss M/T is a newer entrant that has gained a strong following. It combines aggressive tread with modern technology for improved performance.
- Traction: Excellent in mud, snow, and rocks. The PowerPly casing adds strength.
- Road Noise: Quieter than expected for a mud-terrain. The tread pattern reduces drone.
- Durability: Built with a 3-ply sidewall. It’s designed to handle extreme conditions.
- Weight: Around 76 pounds. Heavier than some competitors but offers great off-road grip.
The Baja Boss M/T is a top pick for Gladiator owners who want a tire that performs well in all off-road conditions. It’s a solid choice for rock crawling and mudding.
Factors To Consider When Choosing 37 Inch Tires
Before you buy, think about how you use your Gladiator. Not all 37-inch tires are created equal. Here are key factors to evaluate.
Weight And Rotating Mass
Heavier tires affect acceleration, braking, and fuel economy. A 37-inch tire can weigh between 65 and 80 pounds. Lighter tires are better for daily driving, while heavier tires offer more durability for off-road use.
Consider your Gladiator’s gearing. If you have stock gears, heavy tires can make the Jeep feel sluggish. You might need to regear to 4.56 or 4.88 to restore performance.
Tread Pattern And Traction
All-terrain tires work well on pavement and light trails. Mud-terrain tires excel in deep mud and rocks but are louder on the highway. Hybrid tires offer a balance between the two.
Think about the terrain you encounter most. If you live in a rainy area, look for tires with good water evacuation. If you drive in snow, check for the Three Peak Mountain Snowflake rating.
Road Noise And Comfort
Mud-terrain tires are louder than all-terrain tires. If you spend a lot of time on the highway, consider a hybrid or all-terrain option. Test drive a Gladiator with different tires to see what noise level you can tolerate.
Some tires have variable pitch patterns to reduce drone. This makes a big difference on long trips.
Durability And Sidewall Strength
Off-road tires need strong sidewalls to resist punctures. Look for tires with 3-ply or reinforced sidewalls if you wheel in rocky terrain. The load range also matters; E-rated tires are stiffer and more durable.
Check the treadwear warranty. Some tires offer 40,000 to 50,000 miles of coverage. This gives you peace of mind for daily driving.
Installation And Fitment Tips
Putting 37-inch tires on a Gladiator requires some modifications. Here’s what you need to know.
Lift Kit Requirements
Most Gladiators need a 2- to 3-inch lift to clear 37-inch tires. This prevents rubbing on the fenders and control arms. A suspension lift is better than a spacer lift for off-road performance.
You might also need aftermarket fender flares for additional clearance. High-clearance bumpers can help with approach angles.
Wheel Offset And Backspacing
Proper wheel offset prevents rubbing. For 37-inch tires, a wheel with 4.5 to 5 inches of backspacing works well. This pushes the tire outward for better clearance.
Test fit before you buy. Some Gladiators have different suspension setups that affect clearance.
Regearing Considerations
37-inch tires are heavy and large. Stock gears (3.73 or 4.10) will make the Gladiator feel sluggish. Regearing to 4.56 or 4.88 restores acceleration and helps the transmission stay in the right gear.
If you have an automatic transmission, consider 4.88 gears for better off-road performance. Manual transmissions can use 4.56 gears for a good balance.
Maintenance And Care For 37 Inch Tires
Proper maintenance extends tire life and improves safety. Follow these tips.
Regular Rotation
Rotate your tires every 5,000 to 7,000 miles. This ensures even wear, especially on a heavy vehicle like the Gladiator. Use a 5-tire rotation if you have a full-size spare.
Check the tire pressure monthly. Under-inflated tires wear faster and reduce fuel economy. Over-inflated tires ride harshly and can be dangerous.
Alignment And Balancing
Get an alignment after installing new tires. This prevents uneven wear and keeps the steering straight. Balance the tires to avoid vibrations at highway speeds.
If you feel a wobble or shake, have the tires rebalanced. This is common with larger tires.
Inspect For Damage
Check your tires for cuts, bulges, or punctures after off-road trips. Small issues can become big problems if ignored. Replace any tire with sidewall damage.
Monitor tread depth. Use the penny test to check when it’s time for new tires. Replace them when the tread reaches 2/32 of an inch.
Frequently Asked Questions
Q: Can I fit 37-inch tires on a stock Jeep Gladiator?
A: No, you need at least a 2-inch lift and aftermarket wheels with proper offset. Stock Gladiators will rub on the fenders and control arms.
Q: What is the best 37-inch tire for daily driving?
A: The Nitto Ridge Grappler or BFGoodrich KO2 are excellent for daily driving. They offer low road noise and good tread life.
Q: Do 37-inch tires affect fuel economy?
A: Yes, expect a 2-4 mpg drop. The heavier rotating mass and increased rolling resistance reduce efficiency.
Q: How long do 37-inch mud-terrain tires last?
A: Typically 30,000 to 40,000 miles with proper maintenance. All-terrain tires last longer, often 50,000 miles or more.
Q: Do I need to regear for 37-inch tires?
A: It’s highly recommended. Regearing to 4.56 or 4.88 restores acceleration and prevents transmission strain.
Final Thoughts On Choosing The Best 37 Inch Tires For Jeep Gladiator
Your tire choice defines your Gladiator’s capability. The Best 37 Inch Tires For Jeep Gladiator depend on your driving habits. If you daily drive and weekend warrior, the Nitto Ridge Grappler is a safe bet. For serious off-roaders, the Toyo Open Country M/T or Mickey Thompson Baja Boss M/T deliver unmatched traction.
Remember to factor in weight, noise, and durability. Invest in a proper lift and regearing to get the most out of your tires. With the right setup, your Gladiator will conquer any terrain while staying comfortable on the road.
Take your time to research and test drive if possible. The right tires transform your Jeep experience. Happy wheeling, and enjoy the upgrade to 37 inches.