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๐ Dominate the wild with unstoppable grip and rugged style!
The Cooper Discoverer STT Pro 37X13.50R20LT tire is a premium 10-ply, all-season off-road tire featuring Armor Tek3 sidewall technology for enhanced durability, a massive 37-inch diameter for aggressive presence, and specialized tread patterns like Rock Climber Sidewall and Mud Slingers 2.0 for superior traction on mud, rocks, and dirt. Designed for extreme off-road performance without sacrificing on-road comfort, it supports a load capacity of 3860 lbs and maintains reliable traction year-round.









| ASIN | B017XTZ3Y8 |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #123,912 in Automotive ( See Top 100 in Automotive ) #108 in Light Truck & SUV All-Terrain & Mud-Terrain Tires |
| Brand | Cooper |
| Brand Name | Cooper |
| Construction Type | Radial |
| Customer Reviews | 4.5 out of 5 stars 248 Reviews |
| Global Trade Identification Number | 00029142829829, 00781787878449 |
| Included Components | Tire Only |
| Item Diameter | 36.85 Inches |
| Item Dimensions | 36.85 x 36.85 x 13.3 inches |
| Item Type Name | Tire |
| Item Weight | 84.09 Pounds |
| Load Capacity | 3860 Pounds |
| Load Index | 127 |
| Load Range | E |
| Manufacturer | Cooper |
| Manufacturer Part Number | 170134006 |
| Manufacturer Warranty Description | Standard Limited Warranty |
| Maximum Pressure | 65 Pound per Square Inch |
| Model Number | 170134006 |
| Ply | 10-Ply |
| Rim Size | 20 Inches |
| Rim Width | 11 Inches |
| Seasons | Year Round |
| Section Width | 13.5 Inches |
| Size | 37X13.50R20LT 127Q |
| Spare Tire Mounting Location | Front or Rear |
| Speed Rating | Q |
| Tire Aspect Ratio | 13.5 |
| Tire Diameter | 37 Inches |
| Tread Depth | 21 32nds |
| Tread Type | Non-Directional |
| UPC | 029142829829 781787878449 |
| Unit Count | 1.0 Count |
| Vehicle Tire ISO Metric Size Description | 370/13.5R20 |
G**B
Awesome tires
Background: On my daily driver wrangler that mostly goes over NYC potholes I have only had these tires for a few months but so far they are awesome. They are pretty quiet for hybrid mud tires, work well in the rain and do not hurt my already terrible gas mileage lol. I havenโt used them in snow yet so I canโt comment on that but so far, they are doing everything I asked of them. I would also recommended to check out the specs on Cooperโs website on the size of the tires. I got 295/65/20 and I have yet to find a spare tire cover that fits...plan accordingly. Update 1/4/19 I went to Rausch Creek, Pa to do some off-roading and these tires are legit. At one point, I had a rock poking my tire with no issues, even waited there as my brother took a picture lol. Went on some green,blues, blacks, went through streams and mud with no problems. I probably could have done even tougher trails but I didnโt want to break anything. At the end of the day, I aired back up and was on my way. Again, I one hundred percent recommend. Looking forward to see how they are in the snow but I am sure they are great.
.**.
Satisfied
They hum a bit at low speeds and it increases at highway speeds but to be expected with mud tires. I've heard many that were a lot louder. Good looking and seem to handle o.k. on wet pavement. Haven't done any serious off roading with them yet so will update later. They better work good @ $1971 for a set of 4 tires. Thought for that much it might include some stock in the Cooper co. LOL.
S**F
So far, so good.
So far, Iโve had theses tires on my f150 for 1300 miles. They are a little louder than I was hoping for, but I wasnโt surprised due to their aggressive design. They are a little louder than the Ridge Grapplers. They are similar to the nitto m/t on the noise level. They are reasonably smooth. Most of my driving, so far, has been on the highway with some on gravel roads. The tires look good with their aggressive tread design. The tires seem to handle as well as my ridge grapplers. I have reasonably high expectations for the mileage since that has been my history with Cooper tires in the past, but only time will tell. I have 7000 miles on the tires now, and they are holding up well. Theyโve performed well through the summer on these hot Texas and NM roads. They do pick up and sling rocks if driven down gravel roads.
M**Y
Great tires
I have put 10,000 miles on these tires now and they drive amazing. The tread still looks the same the day I bought them. Highly recommend these tires.
D**J
Good tires at a good price
This is my 3 set of tire of this brand and model. I love everything about them. The seller had them at a good price and they were sent out promptly. Whenever I need a replacement set Iโm for sure getting from them again. Thank you guys ..!!!!
W**N
Highly recommend
Great tire ride nice low noise good on and off road
W**T
Awesome Tires !! perfect for in the woods and off road
Pretty much the perfect tire for here in mountains. utilizing these for my F-150 to transport real estate clients , have not had to engage 4-wheel drive since installing these -- oh and they look pretty awesome on the truck as well
C**.
Blowout - 35x12.5x20 Cooper STT
Bought a set of these 2 years ago and put them on a few months later. They've been great overall, especially with all of this snow. However, I just had a blowout with one of these while on the interstate. Should've gotten at least another 3-4 years out of them, especially considering they still look brand new, but I guess not. ๐ Thankfully I didn't wreck.
Trustpilot
2 weeks ago
2 weeks ago