Cooper

Cooper Discoverer STT PRO - 35x12.50R17/E 121Q Tire

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Item # 984136492
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Highlights

  • Mud Terrain, All Season
  • Trucks
  • Severe Weather Traction
  • Notable Off-Road Performance
  • Extreme Off-Road Tire
  • Outlined White Letters
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cooper discoverer stt pro - 35x12.50r17/e 121q tire centered three-quarter view showing aggressive deep-void tread, chunky shoulder lugs and black sidewall with raised DISCOVERER lettering; spec-noted Stone Armorâ„¢ and Rock Climber Sidewallâ„¢ names apply, often used for overlanding or rock crawling.
Cooper Discoverer STT PRO - 35x12.50R17/E 121Q Tire
Hero image 0 of Cooper Discoverer STT PRO - 35x12.50R17/E 121Q Tire, 0 of 5

About this item

Product details

Before purchasing tires, make sure to use our Tire Finder to select the right fit for your vehicle.

Rock Climber Sidewallâ„¢ Technology helps conquer the toughest obstacles. Stone Armorâ„¢ Technology helps defend against sharp rocks and debris. Uniquely formulated rubber compound for outstanding performance in wet and dry off-road conditions.

A Strong Defense
Stone Armorâ„¢ Technology protects the tire from damage caused by sharp rock and debris.

Grip Through Mud
Mud Slingersâ„¢ 2.0 offer deep, wide trenches with additional notches that continuously clear thick mud from the tire.

Tackle Tricky Terrain
Earth Diggersâ„¢ Technology digs deeper into mud, sand or dirt with large shoulder scoops and lugs.

45-Day Test Drive
Need time to make sure these tires are the right ones for your vehicle? Cooper Tires offers a 45-Day Test Drive to test out your new tires.

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Specifications

Product Details
Tire Size:35x12.50R17/E
Service Description:121Q
Sidewall:Outlined White Letters
Material # or MSPN:170-255-034
Rim Width (min. to max.):8.5-11.0
Section Width:12.6
Overall Diameter:34.6
Tread Depth (32nds):21
RPM:600
Max Load (lbs.):3195 lbs @ 65 psi
UTQG Rating
Treadwear:0
Traction:
Temperature:

Warnings and disclaimers

Disclaimer

Wheel Not Included

With the purchase of 4 tires, the Tire Installation Package ($20 per tire) includes:

  • Free Installation for Plus, when you buy 4 tires
  • Tire Mounting
  • Free Lifetime Rotation & Balance
  • Free Lifetime Flat Repair
  • 5 years Road Hazard Protection (Excluding New York State)
  • 4 years of 24-hour Roadside Assistance

***Road hazard protection not available in New York for new tire purchase after 2/28/2190

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Showing 1-1 of 1 review

Aug 13, 2026
Reviewer name: Alicia
1 out of 5 stars
1 out of 5 stars review

Fake Off-Road

I purchased a completed set of these less than a year ago for my older pickup used mainly for dumping trash and launching jon boat. First time the truck went 'off -road' (if you'd even call it that) while riding through wooded trail behind house, one of the tires got punctured when driving over a fallen branch. The puncture is too close to the sidewall, so I can't get it repaired. Forced to purchase a whole new tire, even though these are practically brand new (200-300 miles). I think the tire looks good and seems to ride fine on pavement. However, I would advise staying away if you're wanting an actual decent off road tire. If you're just wanting something that looks good on the road, but doesn't really perform in the realm they're marketed for... these are for you.

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