Tire Scouter
Cooper Discoverer STT PRO

Cooper Discoverer STT PRO

  • All-terrain
  • 14 sizes

Best for off-road enthusiasts. Ideal for drivers who frequently tackle rugged terrains and prioritize durability over on-road refinement.

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Not graded

Score and specs shown for size 235/85R16. Other sizes are listed below and can differ.

Our take

The Cooper Discoverer STT PRO is a solid choice for off-road enthusiasts who value durability and rugged terrain capability. Its treadlife score of 8.3 surpasses the all-terrain category average, indicating it can handle the wear and tear of off-roading better than many rivals. However, its wet grip score of 4 is a notable weakness, trailing the category average of 5.2 — a potential issue for those who encounter frequent rain.

In terms of handling, the tire performs adequately with a score of 6.5, aligning with the average for all-terrain tires. This suggests it offers predictable control on various surfaces. However, the lack of a treadwear warranty could be a drawback for cost-conscious buyers, especially when competitors like the Yokohama Geolandar A/T G015 offer mileage guarantees.

When comparing against competitors, the Discoverer STT PRO stands out for its off-road durability but falls short in wet conditions and warranty coverage. If you primarily drive on paved roads or need a tire with better wet performance, consider alternatives like the Toyo Open Country A/T III or the Pirelli Scorpion Zero All Season.

Drivers who prioritize off-road capability and treadlife over wet grip and warranty coverage will find the Discoverer STT PRO a fitting choice. However, if wet performance is a priority, it's worth exploring other options in the market.

Pros

  • Treadlife score of 8.3 is well above the category average, suggesting long-lasting durability for off-road adventures.
  • Off-road traction is robust, making it suitable for challenging terrains, though specific scores aren't provided.
  • Handling score of 6.5 matches the category average, ensuring predictable performance on mixed surfaces.

Cons

  • The wet grip score of 4 is significantly below average, making it less suitable for regions with frequent rain.
  • Wet grip score of 4 falls below the category average of 5.2, which could be a concern in rainy conditions.
  • No treadwear warranty is provided, unlike some competitors such as the Yokohama Geolandar A/T G015 which offers a mileage warranty.
  • The speed rating of R limits its high-speed capability compared to some competitors with higher ratings.

Tirescouter Editorial analysis, written from manufacturer specs with AI assistance. It is not based on road tests or owner reviews. How we score

Spec facts

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Q · 100 mph
120 · 3,042 lb max
80 psi
No

Available sizes

Every size the Discoverer STT PRO comes in. Pick a size to compare other tires made in it.

14 sizes

Every size this tire comes in, with its load, speed and UTQG ratings
SizeShop this sizeLoad indexSpeed ratingUTQGWarrantyMax loadMax PSI
235/85R16Tire Rack120Q · 100 mphNot gradedNone3,042 lb80
245/75R16Tire Rack120Q · 100 mph600None3,042 lb80
265/70R17Tire Rack121Q · 100 mph600None3,195 lb80
265/75R16Tire Rack123Q · 100 mph600None3,415 lb80
275/65R18Tire Rack123Q · 100 mphNot gradedNone3,415 lb80
275/65R20Tire Rack126Q · 100 mphNot gradedNone3,750 lb80
275/70R18Tire Rack125P · 93 mphNot gradedNone3,640 lb80
285/75R16Tire Rack126Q · 100 mphNot gradedNone3,750 lb80
305/55R20Tire Rack125Q · 100 mphNot gradedNone3,640 lb80
305/70R18Tire Rack126Q · 100 mphNot gradedNone3,750 lb65

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