








🛞 Rule Every Terrain with Confidence and Style
The Cooper Discoverer STT Pro 31X10.50R15LT 109Q is a premium all-season off-road tire featuring a 31-inch diameter and 10-ply construction. It boasts Armor Tek3 sidewall technology for enhanced durability, deep 20/32 tread depth with specialized cleats and mud scoops for superior traction in mud, rocks, and snow. Designed for extreme off-road performance without sacrificing on-road handling, it carries a standard limited warranty and supports a load capacity of 2,270 pounds.








| ASIN | B014HH7B9E |
| Best Sellers Rank | #1,290,358 in Automotive ( See Top 100 in Automotive ) #2,463 in Light Truck & SUV All-Terrain & Mud-Terrain Tires |
| Brand | Cooper |
| Brand Name | Cooper |
| Customer Reviews | 4.2 out of 5 stars 65 Reviews |
| Global Trade Identification Number | 00029142829454, 00291428294540 |
| Included Components | Tire Only |
| Item Diameter | 30.8 Inches |
| Item Dimensions | 30.75 x 30.75 x 10.7 inches |
| Item Height | 10.7 inches |
| Item Type Name | Tire |
| Item Weight | 46.1 Pounds |
| Load Capacity | 2270 Pounds |
| Load Index | 109.0 |
| Manufacturer | Cooper |
| Manufacturer Warranty Description | Standard Limited Warranty |
| Maximum Pressure | 50 Pound per Square Inch |
| Ply | 10-Ply |
| Rim Size | 15 Inches |
| Seasons | Year Round |
| Section Width | 10.5 Inches |
| Size | 31X10.50R15LT 109Q |
| Speed Rating | Q |
| Tire Aspect Ratio | 10.5 |
| Tire Diameter | 31 Inches |
| Tread Depth | 20 32nds |
| Tread Type | Non-Directional |
| UPC | 826825966358 291428294540 029142829454 |
| Unit Count | 1.0 Count |
M**N
Love them! Great looking tires! Rides really nice
Looks great in the jeep wanted to wait to review until we rode on them for awhile but overall really nice tires
T**S
These tires hold up well
I run these on my truck already and the really dig in and get a grip plus they hold up well I do put tire protectant on them with uv blocker in a to help them last longer but they are a great tire and more affordable than good year or bf goodrich Or mickey Thompson tread depth is very deep and they clear stones easily work great in snow mud and highway they hum but not too bad and they balance easy
R**L
Great offroad tire with minimal NVH
Bought these exact tires from amazon about 2 years ago in november 2017 for my 1992 Toyota 4Runner. They are just about to need replacing after approx 20k miles. As long as you rotate these tires a minimum of once every 5k miles they roll very nicely with minimal road noise even at speeds of 70mph. If you have to go faster than 70mph these are probably not the tires for you. Have gone on mild trails with these tires as well as in fairly deep soft sand with no problems. They look amazing on the truck as well. I originally had Mickey Thompson Baja MTZ Radial tires on the same rims in the same size and I would not get those again after trying these cooper stt pro's. They are a much more advanced tire and still offer the offroad performance that I need.
A**R
and they where pretty smooth. Offroad traction on trails has been great ...
Arrived quickly. Tried them out with NO balancing on them just out of curiosity, and they where pretty smooth. Offroad traction on trails has been great and these have taken the mildly modded Samurai to yet another level of improved capability. Previous tires were 10+ year old BFG AT with only 30% or so tread left and to be fair, I got them 2nd hand and didn't get to experience them new. So, probably any half way decent tire would have been noticeably better than old dried out tires, not matter how good they may have been when new. That being said, the Samurai nearly doubled it's abilities with it's 3" lift and move up to 31's... then adding a rear locker and proper diff gearing netted almost as big a gain again. Finally, adding these tires was not quite as big a jump as the other mods... but, again, a VERY noticeable gain in offroad traction and climbing ability. Long, 100% grade climbs that used to take effort and both hands and were a bit of a challenge, suddenly became casual, one hand on the wheel affairs. No chance to try them in in rain or snow yet.... but trail and rocky stuff has been great. Watch the "cooper puncture test" video online. As for noise.... my 4x4 is NOT my daily driver... so "tire noise" is more like TIRE MUSIC to me. But they are not particularly loud. Yes, you can hear them and they are more noise than your street car.... but, by FAR are NOT that noisy for mud tires. Prices on these fluctuate FAR more than BFG KM2 (my other choice).... but the BFG's would NEVER drop as low priced as these have from time to time.... When they dropped to only about $25 more than the cheapest tires out there, it was a no brainer! VERY pleased with them! [O.|||||.O]
T**H
Great tires
Installed these on new rims for my SXS to complete making it street legal. So far they have worked well in sand, mud, hard packed dirt and obviously on the street. I’ve have used other Cooper Adventurers on my trucks too!
D**I
Quiet sounding tires that ride really nice. So for very impressed
Great smooth riding and sounding tires. Low tone humming sounds terrific 👍. Great grip on and off hwy . Very impressed. Worth the money. Will be putting them on my other 2 vehicles
T**.
Amazon is the worst company I've ever dealt with.
Tire was great. Amazon was the worst company I've ever had to deal with.
P**T
Fast shipping
Tires arrived 2 days after ordering and exactly what described. Great tire
Trustpilot
2 months ago
1 week ago