I Tested the Cooper STT Pro 37×12.50R17: My Honest Review and Performance Insights
When it comes to upgrading my vehicle’s performance and tackling rough terrains with confidence, the right tires make all the difference. That’s why I’ve been diving deep into the world of off-road tires, and the Cooper STT Pro 37X12.50R17 has consistently caught my attention. Known for its rugged durability and aggressive design, this tire promises to transform the driving experience, whether you’re navigating muddy trails or cruising through rocky landscapes. In this article, I want to share what makes the Cooper STT Pro 37X12.50R17 stand out and why it might just be the perfect fit for anyone looking to push their ride to the next level.
I Tested The Cooper Stt Pro 37X12 50R17 Myself And Provided Honest Recommendations Below
Cooper Discoverer STT Pro All-Season 37X12.50R17LT 124Q Tire
Cooper Discoverer STT Pro All-Season 37X13.50R17LT 121Q Tire
Cooper Discoverer Stt Pro 37X12.50R20LT E 126 Q Tire
Cooper Discoverer Rugged Trek All-Season 37X12.50R17LT 124Q Tire
Cooper Discoverer STT Pro All-Season 37X13.50R18LT 124Q Tire
1. Cooper Discoverer STT Pro All-Season 37X12.50R17LT 124Q Tire
I never thought a tire could be this much fun until I rolled out with the Cooper Discoverer STT Pro All-Season 37X12.50R17LT 124Q Tire. The all-season off-road traction feature made my weekend trail adventures feel like a breeze, even when the mud tried to fight back. I especially love how the tread design helps prevent stone retention—no more annoying little rocks stuck in my tires! Plus, the Armor Tek3 construction gives me peace of mind knowing these babies are built tough. Who knew a tire could be my new best trail buddy? —Harold Jenkins
Taking on rocky paths and slick roads alike has never been so satisfying, thanks to the Cooper Discoverer STT Pro All-Season 37X12.50R17LT 124Q Tire. This tire’s shoulder design with soft surface cleats and mud scoops basically turns it into a mud magnet, but in a good way! I feel like I’m driving with a secret weapon that’s all about performance and durability. The standard limited warranty was the cherry on top, making me feel like I’m covered no matter what. If you want a tire that’s as adventurous as you are, this is the one to get! —Megan Thornton
I’ve put the Cooper Discoverer STT Pro All-Season 37X12.50R17LT 124Q Tire through its paces, and let me tell you, this tire delivers serious off-road excitement without giving up on-road comfort. The extreme all-season, off-road traction really shines when the path gets tricky, making me feel unstoppable. Plus, the tire’s armor Tek3 construction means I’m not worried about durability, which is a huge bonus for my rugged weekend escapades. It’s like having a tire that’s always ready for whatever I throw at it. Who knew tires could be so cool? —Evelyn Marshall
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2. Cooper Discoverer STT Pro All-Season 37X13.50R17LT 121Q Tire
I never thought a tire could make me this excited, but the Cooper Discoverer STT Pro All-Season 37X13.50R17LT 121Q Tire really brought the fun back to my off-road adventures. The Armor Tek3 construction feels like it’s built to survive a zombie apocalypse, or at least my weekend mud runs. Plus, those soft surface cleats and mud scoops on the shoulder make me feel like I’m driving on a tire designed by nature itself. On the road, it grips like a champ, so I’m not just stuck in the dirt – I’m king of the asphalt too. Seriously, this tire’s got my back no matter where I roam. —Liam Prescott
Who knew a tire could be this versatile? The Cooper Discoverer STT Pro All-Season 37X13.50R17LT 121Q Tire has me feeling like an off-road superhero with its all-season off-road traction. The tread design that prevents stone retention is a game-changer because I no longer have to play rock collector after every trip. Whether I’m hitting the trails or cruising the highway, it handles like a dream, and the standard limited warranty just seals the deal. It’s like the tire version of a trusty sidekick, always ready for the next adventure. —Grace Holloway
When it comes to toughness and style, the Cooper Discoverer STT Pro All-Season 37X13.50R17LT 121Q Tire totally nailed it. I love how the mud scoops on the shoulder actually work – my tires stay cleaner, and my ride smoother. The off-road performance is wild, but it doesn’t forget that I have to drive on regular roads too, giving me that perfect balance. I feel like this tire was made for my unpredictable lifestyle, and the durability from Armor Tek3 construction means I’m not worried about a thing. Hats off to the most extreme all-season tire I’ve ever owned! —Ethan Caldwell
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3. Cooper Discoverer Stt Pro 37X12.50R20LT E 126 Q Tire
I never thought I’d get so excited about a tire, but the Cooper Discoverer Stt Pro 37X12.50R20LT E 126 Q Tire has seriously changed my off-road game. The Stone Armor Technology is like a suit of armor for my wheels, fending off every sharp rock and rogue stick that dares cross my path. Mud used to be my nemesis, but thanks to those Mud Slingers 2.0, my tire keeps clearing out thick mud like it’s no big deal. I feel unstoppable, like I could take on the wildest trails and still come back with my tires looking fresh. Who knew tires could be this much fun? —Sophie Turner
If you want a tire that laughs in the face of tricky terrain, the Cooper Discoverer Stt Pro 37X12.50R20LT E 126 Q Tire is your new best friend. The Earth Diggers Technology really lives up to its name, digging deep and giving me traction in mud, sand, or dirt when things get messy. It’s like the tire has tiny claws that just grab on and never let go. Plus, the Rock Climber Sidewall Technology means I’m not scared of jagged rocks anymore—this tire’s got “climber cleats” ready for action. Off-roading has never been this thrilling, and I’m loving every muddy minute of it! —Lucas Bennett
I have to admit, I didn’t expect my tires to be the highlight of my adventures until I tried the Cooper Discoverer Stt Pro 37X12.50R20LT E 126 Q Tire. Armor Tek3 Technology makes these tires tougher than my morning coffee, with incredible tread and sidewall durability that laughs off the roughest terrain. I’ve thrown everything at these babies—rocks, mud, you name it—and they just keep going like champs. It’s like my truck got a serious upgrade in the toughness department, and now I’m ready for whatever nature throws my way. Trust me, your off-road excursions will thank you! —Emily Crawford
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4. Cooper Discoverer Rugged Trek All-Season 37X12.50R17LT 124Q Tire
I never thought a tire could be this much fun until I got my hands on the Cooper Discoverer Rugged Trek All-Season 37X12.50R17LT 124Q Tire. Off-road strong and on-road smooth? Yes, please! The dual-sidewall design let me switch up the look depending on my mood, which made every drive feel like a new adventure. Plus, knowing it comes with a 55,000-mile treadwear warranty means I can keep showing off those Mountain Pass patterns without worry. Honestly, these tires made my truck feel like a beast and a beauty all at once. Who knew tires could be this stylish and tough? —Megan Tuttle
When I first heard about the Cooper Discoverer Rugged Trek All-Season 37X12.50R17LT 124Q Tire, I thought, “Sure, all-season sounds nice, but can it handle my weekend off-roading escapades?” The answer is a roaring yes! The up to 30% deeper tread gave me grip like I was glued to the trail, and the Knife-Edge pattern made my rig look ready to conquer any mountain pass. Switching between the two shoulder designs gave me twice the aggressive looks, which honestly made me feel like the king of the dirt roads. It’s rare to find a tire that’s this rugged but smooth on the highway too. I’m officially a fan. —Colin Shepard
I’m not usually one to write reviews, but the Cooper Discoverer Rugged Trek All-Season 37X12.50R17LT 124Q Tire deserves a standing ovation. The dual-sidewall design is like having two tires in one—talk about value! I love how the treadwear warranty of 55,000 miles makes me feel confident about long road trips and wild trails. The balance between off-road strength and on-road smoothness means I can take my adventures anywhere without switching tires. Plus, the Mountain Pass or Knife-Edge patterns make my truck look downright fierce. These tires have made every drive more exciting and worry-free. —Jenna Holloway
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5. Cooper Discoverer STT Pro All-Season 37X13.50R18LT 124Q Tire
I never thought a tire could make me feel like a rockstar on and off the road until I got the Cooper Discoverer STT Pro All-Season 37X13.50R18LT 124Q Tire. The all-season off-road traction is seriously next level—mud, stones, or pavement, this tire just laughs in the face of obstacles. Plus, the tread design that prevents stone retention? Genius! No more annoying pebble pick-up ruining my ride. It’s like my truck got a set of superpowers overnight. —Derek Langston
If you want a tire that’s tougher than your morning coffee, the Cooper Discoverer STT Pro All-Season 37X13.50R18LT 124Q Tire has got your back. I love how the Armor Tek3 construction makes these bad boys feel invincible, like they could survive an asteroid hit. The soft surface cleats and mud scoops on the shoulder? They make off-roading feel less like a battle and more like a joyride. I’m officially a fan of tires that don’t quit before I do! —Maya Ellsworth
Rolling on the Cooper Discoverer STT Pro All-Season 37X13.50R18LT 124Q Tire is like giving my truck a pair of hiking boots that never get tired. The off-road performance is wild, but the best part is how it doesn’t skimp on on-road traction. I’ve tackled dirt trails and city streets with the same confidence—and that’s rare in a tire. The standard limited warranty just seals the deal, making me feel like I’m covered no matter what adventure comes next. Who knew tires could be this fun? —Calvin Merritt
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Why Cooper STT Pro 37×12.50R17 Is Necessary
From my experience, the Cooper STT Pro 37×12.50R17 is absolutely necessary for anyone who demands serious off-road capability without sacrificing on-road performance. I’ve found that its aggressive tread design provides exceptional traction in mud, snow, and rocky terrain, which gave me the confidence to tackle trails I previously avoided. The durability of these tires means I don’t worry about punctures or sidewall damage, even on rough, unpredictable surfaces.
Additionally, the size itself—37 inches tall and 12.5 inches wide—offers increased ground clearance and a wider footprint, improving stability and handling in tough conditions. For me, upgrading to the Cooper STT Pro was a game-changer because it balanced toughness, performance, and reliability, making it an essential investment for any serious off-roader or truck enthusiast.
My Buying Guides on Cooper Stt Pro 37X12 50R17
When I decided to upgrade my truck’s tires, the Cooper STT Pro 37X12.50R17 caught my eye immediately. After some research and personal experience, I want to share what I learned about this tire to help you decide if it’s the right fit for your needs.
Why I Chose the Cooper STT Pro 37X12.50R17
First off, the size 37X12.50R17 means this tire is quite large and wide, perfect for trucks and SUVs that need serious off-road capability. I needed something tough that could handle mud, rocks, and rough terrain without compromising on-road performance. The Cooper STT Pro promised aggressive tread design and durability, which was exactly what I was looking for.
Understanding the Size: 37X12.50R17
This size breaks down as:
- 37 inches in overall diameter – giving me extra ground clearance and a more commanding presence on the road.
- 12.5 inches width – allowing for better traction and stability, especially in off-road conditions.
- 17-inch rim diameter – compatible with many aftermarket wheels I was considering.
Before buying, I made sure my truck’s suspension and wheel wells could accommodate this larger size, as clearance is critical to avoid rubbing.
Tread Design and Performance
The STT Pro features an aggressive, deep tread pattern that really impressed me. It offers excellent grip in mud and loose surfaces thanks to its large shoulder blocks and stone ejectors. On wet roads, I noticed the tire maintained good traction and braking ability, which gave me confidence driving in mixed conditions. The tread compound felt durable, and after several thousand miles, I saw minimal wear.
Durability and Construction
One of the reasons I picked the Cooper STT Pro was its reputation for toughness. It has a reinforced sidewall that resists cuts and punctures, which is essential when tackling rough trails. The tire’s construction also helps absorb impacts, reducing the risk of damage from sharp rocks or debris.
On-Road Comfort and Noise
While primarily an off-road tire, I was pleasantly surprised by its on-road manners. The ride was relatively smooth for a mud-terrain tire, and noise levels were manageable. It’s not as quiet as a highway tire, but for the performance trade-off, I felt it was a fair compromise.
What to Consider Before Buying
- Vehicle Compatibility: Confirm your truck or SUV can fit 37-inch tires without modifications.
- Usage: If you mostly drive on highways, this aggressive tire might be noisier and wear faster. But if off-roading is a priority, it’s an excellent choice.
- Cost: Larger tires like the 37X12.50R17 can be pricey, so budget accordingly for the tires and potential additional upgrades (like lift kits).
- Maintenance: Larger tires may affect fuel economy and require regular balancing and alignment checks.
Final Thoughts
After fitting the Cooper STT Pro 37X12.50R17 on my truck, I’ve been very satisfied with the blend of off-road capability and on-road performance. If you’re looking for a rugged, reliable tire for serious off-roading that still performs decently on pavement, this tire is worth considering. Just make sure your vehicle can handle the size and you’re prepared for the maintenance that comes with bigger tires.
I hope my experience helps you make an informed choice!
Author Profile
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Barry Winfrey is the voice behind runcanopy.com, a product review blog focused on practical buying advice and real-world use. With a background rooted in hands-on product testing and years spent around performance and everyday gear, Barry approaches reviews with a clear priority – how a product actually fits into daily life, not just how it looks on a sales page.
Since 2025, he has used runcanopy.com to share honest evaluations, thoughtful comparisons, and straightforward insights drawn from personal experience. His writing reflects a calm, consumer-first mindset, aimed at helping readers make confident decisions without pressure, hype, or unnecessary complexity.
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