Cooper Discoverer S/T Tire Review & Rating

Engineered as a hybrid of three distinct designs –all-terrain, high void and commercial traction, the Discoverer S/T from Cooper offers all-purpose performance for drivers of light trucks and sport utility vehicles.

A tougher tread compound and deeper tread elements combine with scalloped shoulders and beveled edges to provide off-road traction on a variety of terrains. From dirt, gravel, sand, grass and light mud, the S/T is built to deliver good performance and enhanced self-cleaning abilities.

Cooper Discoverer S/T Tire Review

An optimized tread profile that increases ride comfort, also provides a more evenly distributed contact patch for improved treadwear. Circumferential grooves around the tread help channel away water from under the tire and reduce the risk of hydroplaning on wet road surfaces.

Inside the tire you will find two steel belts for added strength and durability. A polyester cord body increases ride comfort and promotes more even treadwear. The ST is also pinned for the addition of metal studs in the event you need them. Sizes are available ranging from 15-18 inches, and optional load ratings of up to an E.


  • Excellent dry, wet and winter traction   
  • Very capable off-road performance   
  • Quiet on the highway   
  • Longer lasting tread life   


  • Deep mud traction   

Overall Thoughts

Cooper is known for their quality Discoverer line of tires and the S/T is no different. Expect to find good overall performance on dry, wet or snow covered pavement. Traction is sure and confident, while tire stability is outstanding.

The ride on the highway is not as noisy as you might expect from looking at the tread design, and it’s pretty comfortable as well. Tread life is another good point on this tire. Off-road performance is very good for the most part, with the possible exception of deeper mud. For trips to the campsite by the river, boating, etc., this tire will get you there easily.

Overall, we like the S/T for its solid performance and longer tread life. We rank it in the upper half of its class and give it a good recommendation.

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What Vehicles Will The Cooper ST Fit?

(This is not a complete list of ALL vehicles this tire will fit)

  • Chevrolet Tahoe, Blazer, Silverado, Trailblazer, Suburban   
  • Dodge Durango, Dakota, Ram   
  • Ford F-Series, Expedition, Ranger, Bronco   
  • GMC Sierra, Envoy, S-15   
  • Infiniti QX4 SUV   
  • Jeep Wrangler, Grand Cherokee, Commander, Liberty   
  • Nissan Titan, Frontier   
  • Toyota 4-Runner, Tundra, Tacoma   

Tire Sizes


30X9.50R15LT 104Q OWL
31X10.50R15LT 109Q OWL
33X12.50R15LT 108Q OWL
35X12.50R15LT 113Q OWL
LT235/75R15 104Q OWL


LT215/85R16 115N E BLK
LT235/85R16 120N E BLK
LT255/85R16 119N OWL
LT225/75R16 115N E BLK
LT245/75R16 120N E BLK
LT265/75R16 112N OWL
LT265/75R16 123N E OWL
LT285/75R16 122N OWL
LT315/75R16 121N OWL
LT305/70R16 118N OWL


33X12.50R17LT 114Q OWL
35X12.50R17LT 119Q OWL
LT235/80R17 120Q E OWL
LT245/75R17 121Q E OWL
LT245/70R17 119Q E OWL
LT265/70R17 121Q E OWL
LT265/70R17 112Q OWL
LT275/70R17 114Q OWL
LT285/70R17 121Q OWL


LT275/70R18 125Q E OWL
LT275/65R18 123Q E OWL

Price Range

Cooper Discoverer S/T prices range from approximately $135 and up. You may also find occasional rebates, discount prices, coupons and special offers on this tire.

Click Here To Find The Lowest Prices On All Cooper Discoverer S/T Sizes


Cooper provides a limited tread warranty on the S/T. Tire uniformity is guaranteed for the first 2/32 inch of wear. Materials and workmanship are warranted for life and include free replacement during the first 25% of wear. Cooper follows that up with a prorated amount down to the last 2/32 inch of useable tread left on the tire.

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