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Cooper

Cooper Discoverer STT Pro All-Season 35X12.50R15LT 113Q Tire

  • Based on 85 reviews
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Availability: Only 1 left in stock, order soon!
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Arrives Monday, May 11
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Size: 35X12.50R15LT 113Q


Features

  • All-Season Off-Road Traction Tire
  • The most extreme all-season, off-road tire Cooper offers to date
  • Provides remarkable off-road performance without sacrificing on-road traction
  • Tread design helps to prevent stone retention
  • Armor Tek3 construction for added tire durability

Description

The Cooper Discoverer STT Pro All-Season 35X12.50R15LT 113Q Tire is the most extreme all-season, off-road tire Cooper offers to date, providing remarkable off-road performance without sacrificing on-road traction. The Discoverer STT Pro tire delivers best-in-class off-road performance, empowering the extreme off-roader to take on the toughest challenges. Patented Armor Tek3 tire technology adds strength to the tire sidewall, providing increased resistance to damage while driving over boulders and uneven, tough terrain. The Discoverer STT Pro comes with rubber formulated to combat shredding and damage from stones and off-road obstacles. The ROCK CLIMBER SIDEWALL gets max traction to help conquer even the toughest obstacles with deep ‘Climber Cleats’ and Flex Grooves built into the side of the tire that grip jagged rocks and power through thick mud. The MUD SLINGERS 2.0 are deep, wide trenches with additional notches throughout the tread combine to give you more grip to power through and help continuously clear thick mud from the tire. The EARTH DIGGERS can tackle tricky terrain with large blocks with alternating mud scoops that forcefully dig into loose dirt, sand or sticky mud. The STONE ARMOR TECHNOLOGY provides the ultimate durability with channels, ridges, and edges designed to help defend against sharp rocks and debris while expelling lodged stones.

Brand: Cooper


Size: 35X12.50R15LT 113Q


Rim Size: 15 Inches


Section Width: 12.5 Inches


Tire Aspect Ratio: 12.5


Load Index: 113.0


Speed Rating: Q


Load Capacity: 2535 Pounds


Tread Depth: 21 32nds


Tread Type: Non-Directional


Rim Size: 15 Inches


Load Index: 113.0


Speed Rating: Q


Load Capacity: 2535 Pounds


Tread Type: Non-Directional


Maximum Pressure: 35 Pound per Square Inch


Automotive Fit Type: Universal Fit


Load Range: C


Construction Type: Radial


Seasons: Year Round


Brand Name: Cooper


UPC: 029142829485


Global Trade Identification Number: 85


Unit Count: 1.0 Count


OEM Equivalent Part Number: 170113034


Model Number: 170113034


Manufacturer Part Number: 170113034


Manufacturer: Cooper


Included Components: Tire Only


Manufacturer Warranty Description: Standard Limited Warranty


Item Type Name: Tire


Size: 35X12.50R15LT 113Q


Section Width: 12.5 Inches


Tire Aspect Ratio: 12.5


Tread Depth: 21 32nds


Rim Width: 10 Inches


Tire Diameter: 35 Inches


Item Dimensions: 34.57 x 34.57 x 13.1 inches


Item Diameter: 34.57 Inches


Item Weight: 9.9 Kilograms


Vehicle Tire ISO Metric Size Description: 35/12.50R15


Spare Tire Mounting Location: Front or Rear


Ply: 6-Ply


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, May 11

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Great Tires
Bought a set of 4 for my 2019 Nissan Pathfinder. The delivery was quick. They are exceptional. They look great on my car, and the ride is smooth without a lot of road noise coming from the tires. The 65,000 mile warranty is a comfort of knowing I have bought a quality tire. Definitely recommend
Reviewed in the United States on December 18, 2025 by Tonya
    • Perfect winter time tire got mine just in time.
Great tire, not loud going down the highway either!
Reviewed in the United States on January 26, 2026 by Amazon Customer
    • Great Purchase
Review Image by bailey h.
10/10. Great tires for a great price.
Reviewed in the United States on August 2, 2025 by bailey h.
    • Love them so far. Hoping they last.
Review Image by Mark mcmillan
Review Image by Mark mcmillan
Just bought these, mounted them on some pro comp wheels, and so far they're great. Ive been playing around with tire pressure to get even wear because I want them to last as long as possible. Max rating is 35, but to get more even wear, I'm sitting at 28-30 PSI. A few things I've noticed that some people might be interested in before buying, the tread is softer than I expected but I have a lighter vehicle so I hope they still last, they make a little bit of noise on the road but its not bad at all, they're definitely not your average all-terrain tire, the spacing between the tread is closer to a mud terrain but the center tread pattern looks a little more normal, handling for pavement isn't as good as my old BFGs but thats not what I got them for, and I've already had plenty of compliments. I haven't done any serious off-roading with them yet, but I do plan to, and then I will update this review. I have driven them a little in the sand and on a few dirt roads, they seem to be extremely grippy. Update: The wheels that I put them on were 15x8, which caused the tires to bulge a little and could lead to pre-mature wear in the center of the tread. Luckily I spotted this early, ordered some 15x10s and threw those on (8.5-11 recommended). The tires look much better on those and are now touching evenly across the tread. I'm also able to air them appropriately to around 34 PSI. I did take them out on the trail also, and they are awesome! The trails were a mix of sand and mud, and these things were un-stoppable. I purposefully stopped half way up a sand dune to see if I'd get stuck, and they just pulled me right up no problem. ... show more
Reviewed in the United States on May 25, 2017 by Mark mcmillan
    • Mud Approved, Snow Approved, Cinders Approved, Ice Okay
Review Image by Evan
Review Image by Evan
Review Image by Evan
I've put these tires through a lot and broken my truck more than one time with these on. I've owned them a hair less than a year but I already know I'll be buying another set of these when the time comes. I've always been a huge fan of Cooper tires and seen their compounds last years without dry-rotting in the Arizona sun. These tires dig deep and they really aren't too loud on the highway. I live in an area that gets a decent amount of snow and ice. These tires are unbelievable in fresh snow but these are not ice tires. They do great for a mud-terrain but I wouldn't be trusting them to stop you on a dime if you are skating on a big sheet of ice. Look at an all-terrain if you are wanting something that can do better on ice. The trade-off is bad mud performance for better ice performance. What's more important to you? I can see just a little wear on the sharp edges on the lugs of the tires but the wear after about 5000 miles is flat and even (despite the wildly messed up alignment on my truck). I would recommend these tires to anyone doing medium-heavy duty off-road. I never recommend these types of tires for a pavement princess but they do look pretty great on any ride. ... show more
Reviewed in the United States on July 29, 2019 by Evan
    • Awesome tire
Honest review here. 500 miles in on the tread. Extremely aggressive tread style. Whisper quiet on the highway with these as 35s. Don’t listen about everybody saying there loud, they are very quiet and the only time you even hear them is when you’re slowing down. Took them through a trail with plenty of mud and they performed awesome. Parts where other people got stuck in and struggled I got through pretty easily. I drive an 02 Jeep tj and had 30s on before this. Gas mileage didn’t take a huge hit (maybe 2-3 mpg). Overall a very good tire and I would recommend to anybody who is on the road and trail. ... show more
Reviewed in the United States on January 18, 2020 by Evan
    • If you want aggressive looking, no noise, bad a$$ tire this is it! I have it on my jeep wrangler.
Love this tire! I've had mickey thompson mtz before they were really good. I do have bf goodrich km2's as well they are very good. And stt pro cooper discoverer are the same level as those that have been in the market for a while. They ride smooth, really good on traction when wet and looks way aggressive! Am loving this tire! ... show more
Reviewed in the United States on June 29, 2021 by Kuruvilla mathew
    • Greatest 4x4 Tire
I got them for my Bronco I've been riding on my first set for over a year. They have fantastic grip and tread life. I crawled Moab, UT with them and never experienced the traction these gave me. It has only one weakness and that would be solid ice (But I've yet to find a tire that is good with ice). They are more than worth your money and the investment returns ten fold with their performance. ... show more
Reviewed in the United States on April 1, 2020 by Richard M.

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