Choosing the best 37 inch mud tire is critical for serious off-road performance. We researched and compared the top contenders, evaluating manufacturer specifications, industry standards, and aggregated owner feedback from thousands of reviews. Our guide highlights the strengths and weaknesses of each tire to help you make an informed decision.
| Photo | Product | Score | Buy |
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BFGoodrich Mud-Terrain T/A KM3 Best Overall 37×12.50R17 LT, 3-ply sidewall, 15/32" tread depth |
9.0 | 🛒 Check Price |
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Nitto Trail Grappler M/T Best for Durability 37×12.50R17 LT, 3-ply sidewall, 18/32" tread depth |
8.7 | 🛒 Check Price |
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Goodyear Wrangler MT/R with Kevlar Best for Sidewall Protection 37×12.50R17 LT, Durawall Kevlar sidewall, 18/32" tread depth |
8.4 | 🛒 Check Price |
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Mickey Thompson Baja Boss M/T Best for Off-Road Traction 37×12.50R17 LT, PowerPly sidewall, 19/32" tread depth |
8.1 | 🛒 Check Price |
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Cooper Discoverer STT Pro Best Value 37×12.50R17 LT, Armor-Tek3 sidewall, 18/32" tread depth |
7.8 | 🛒 Check Price |
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Toyo Open Country M/T Best for Long Tread Life 37×12.50R17 LT, 3-ply sidewall, 18/32" tread depth |
7.3 | 🛒 Check Price |
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Maxxis Razr MT Best for Rock Crawling 37×12.50R17 LT, 3-ply sidewall, 18/32" tread depth |
7.5 | 🛒 Check Price |
1. BFGoodrich Mud-Terrain T/A KM3: Best Overall
The BFGoodrich Mud-Terrain T/A KM3 is a top performer in extreme mud conditions. Based on owner feedback and the spec sheets, its Mud-Byte system effectively clears mud from the tread, maintaining traction where others slip. The CoreGard sidewall armor provides confidence on rocky trails. In our evaluation, it balances off-road prowess with acceptable on-road manners, though it is noticeably heavy and can be loud on pavement.
However, this tire may not suit those who prioritize highway comfort or budget. The KM3 is expensive and its weight can reduce fuel economy. If you mostly drive on roads with occasional off-road use, consider a less aggressive option. But for dedicated off-roaders, this is a proven choice.
- Mud-Byte system ejects mud from tread for traction
- CoreGard technology for sidewall protection
- 3D sipes for improved road manners
Pros: Excellent self-cleaning in deep mud; Durable sidewall resists punctures; Good on-road stability for a mud tire
Cons: Heavy, impacts fuel economy; Premium price point
2. Nitto Trail Grappler M/T: Best for Durability
The Nitto Trail Grappler M/T is built for rugged durability. We compared its construction to competitors and found its 3-ply sidewall and stone ejectors offer excellent protection against trail hazards. Owner feedback consistently praises its longevity on abrasive surfaces. In our evaluation, it provides reliable traction in mud and over rocks, though it is less self-cleaning than the KM3 in thick clay.
This tire is not ideal for daily drivers who value ride comfort. The stiff sidewall delivers a harsh ride on pavement and road noise is noticeable. If you spend most of your time on highways, look elsewhere. But for hardcore off-road use where durability is paramount, the Trail Grappler is a strong contender.
- Dual sidewall design for protection and traction
- Stone ejectors prevent rock drilling
- Staggered shoulder lugs for grip
Pros: Very tough sidewall resists cuts; Deep tread lasts well on gravel; Good traction in mud and rocks
Cons: Stiff ride on highway; Can be noisy at speed
3. Goodyear Wrangler MT/R with Kevlar: Best for Sidewall Protection
The Goodyear Wrangler MT/R with Kevlar is designed for extreme sidewall protection. Based on manufacturer specs and owner reports, the Kevlar reinforcement significantly reduces cuts and punctures in rocky terrain. In our evaluation, it performs well in mud and offers decent snow traction, making it a flexible off-road tire. The tread design clears mud reasonably well.
However, some owners report tread chunking when used on sharp, jagged rocks. Also, its on-road ride is firmer than some competitors. If you need maximum sidewall armor for rock crawling, this tire is a top choice. But if you encounter loose, sharp rocks frequently, consider a tire with a more strong tread compound.
- Kevlar-reinforced sidewall for cut resistance
- TractiveGroove technology for mud ejection
- Staggered shoulder blocks for traction
Pros: Excellent sidewall puncture resistance; Good traction in mud and snow; Stable on highway at moderate speeds
Cons: Tread can chunk on sharp rocks; Limited sizes available
4. Mickey Thompson Baja Boss M/T: Best for Off-Road Traction
The Mickey Thompson Baja Boss M/T is a traction monster off-road. We researched its design and found the Sidebiters on the sidewall provide extra grip when aired down. Owner feedback highlights its ability to claw through deep mud and over obstacles. In our evaluation, the deep tread and aggressive pattern excel in soft terrain, but this comes at a cost on pavement.
This tire is not recommended for daily highway driving. It is loud, can vibrate, and tread life on asphalt is limited. If your vehicle is primarily a trail rig or you don’t mind the noise, the Baja Boss delivers outstanding off-road performance. But for mixed use, there are better-balanced options.
- PowerPly sidewall for strength
- Sidebiters technology for sidewall traction
- Deep tread with aggressive voids
Pros: Exceptional grip in mud and rocks; Traction bars on sidewall help in ruts; Deep tread for long life in dirt
Cons: Road noise is high; Wears faster on pavement
5. Cooper Discoverer STT Pro: Best Value
The Cooper Discoverer STT Pro offers a balance of off-road capability and on-road comfort at a more accessible price point. Based on owner feedback, it is quieter than many competitors and handles well on pavement. We compared its specs and found the Armor-Tek3 sidewall provides good protection. In our evaluation, it performs adequately in mud, but not exceptionally in deep, sloppy conditions.
This tire may disappoint hardcore off-roaders who need maximum mud traction. The tread pattern does not self-clean as effectively as the KM3 or Baja Boss. If you are a weekend warrior who wants a capable tire that also works for daily driving, the STT Pro is a solid choice. But for dedicated mudding, consider a more aggressive option.
- Armor-Tek3 sidewall for puncture resistance
- Stone blocker ribs prevent stone retention
- Wide tread for stability
Pros: Good value for the price; Durable construction; Decent on-road manners for a mud tire
Cons: Traction in deep mud is average; Tread can pack with clay
6. Toyo Open Country M/T: Best for Long Tread Life
The Toyo Open Country M/T is known for its longevity. We reviewed owner reports indicating it wears slower than many mud tires, even with regular off-road use. Its construction is solid, with a 3-ply sidewall and stone ejectors. In our evaluation, it performs well on rocks and hard-packed trails, but it struggles in deep, sticky mud where the tread can pack.
This tire is not the best choice if you primarily drive in thick mud. Its tread design lacks the aggressive self-cleaning of competitors. If you want a durable tire that lasts and can handle a variety of terrain including highway miles, the Toyo M/T is a good option. But for maximum mud performance, look elsewhere.
- Tough 3-ply sidewall
- Stone ejectors in tread
- Reinforced tread base for stability
Pros: Long tread life on and off road; Stable at highway speeds; Good in rocky terrain
Cons: Mud traction is only moderate; Heavy and can be noisy
7. Maxxis Razr MT: Best for Rock Crawling
The Maxxis Razr MT is a favorite among rock crawlers. Based on owner feedback, its sidewall lugs provide exceptional grip on slickrock and boulders. We compared its tread design and found it ejects mud effectively, performing decently in muddy conditions too. In our evaluation, it offers a good balance for mixed off-road use, but it is not the most durable on sharp rocks.
This tire may not be ideal for heavy trucks or those who frequently encounter sharp debris. Some owners report sidewall cuts in extreme conditions. If you prioritize rock crawling traction and can accept moderate tread life, the Razr MT is a strong performer. But for all-around durability, consider the KM3 or Trail Grappler.
- Sidewall tread lugs for rock grip
- Stone ejectors prevent drilling
- Variable pitch tread for noise reduction
Pros: Excellent traction on rocks; Good self-cleaning in mud; Reasonable road noise for an MT
Cons: Sidewall durability is average; Tread life is shorter on pavement
Frequently Asked Questions
What is the best 37 inch mud tire for daily driving?
For daily driving, the Cooper Discoverer STT Pro offers the best balance of on-road comfort and off-road capability. It is quieter than most mud tires and handles well on pavement, though it sacrifices some deep mud traction.
How long do 37 inch mud tires typically last?
Tread life varies by tire and usage. The Toyo Open Country M/T is known for long tread life, often lasting 30,000-40,000 miles with proper rotation. More aggressive tires like the Mickey Thompson Baja Boss may wear faster, especially on pavement.
Are 37 inch mud tires noisy on the highway?
Yes, most 37 inch mud tires produce noticeable road noise due to their aggressive tread patterns. The BFGoodrich KM3 and Cooper STT Pro are among the quieter options, while the Mickey Thompson Baja Boss and Nitto Trail Grappler are louder.
Do I need a lift kit for 37 inch mud tires?
Typically, a lift kit is required to fit 37 inch tires on most trucks and Jeeps to avoid rubbing. The exact lift height depends on the vehicle and wheel offset. We recommend consulting a professional installer.
What is the best 37 inch mud tire for rock crawling?
The Maxxis Razr MT and BFGoodrich KM3 are top choices for rock crawling due to their sidewall traction and durability. The Goodyear MT/R with Kevlar also offers excellent sidewall protection for sharp rocks.
Our Verdict
After researching and comparing the top 37 inch mud tires, the BFGoodrich Mud-Terrain T/A KM3 stands out as the best overall for its exceptional mud traction, durability, and balanced on-road manners. For a more budget-friendly option that still performs well, the Cooper Discoverer STT Pro is our runner-up, offering good value and everyday usability.
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