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255 Width /
55 Ratio /
R 18 Diameter
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all-season

Discoverer® STT Pro™

Fits Trucks

  • Rock Climber Sidewall™ Technology helps conquer the toughest obstacles
  • Stone Armor™ Technology helps defend against sharp rocks and debris
  • Uniquely formulated rubber compound for outstanding performance in wet and dry off-road conditions.

all-season

Discoverer® STT Pro™

Fits Trucks

  • Rock Climber Sidewall™ Technology helps conquer the toughest obstacles
  • Stone Armor™ Technology helps defend against sharp rocks and debris
  • Uniquely formulated rubber compound for outstanding performance in wet and dry off-road conditions.
45 day test drive guarantee
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45 day test drive guarantee Warranty in days badge, test drive 45 days guarantee

Tires to dominate off road.

Attention off-road warriors, the Discoverer STT Pro tire is our most advanced, extreme and capable off-road tire to date. This is a tire built for the kind of adventure you find at remote destinations.

The Discoverer STT Pro lets you go where others won’t. Rock, mud and dirt have all met their match. Now, go make molehills out of mountains.

Tires to dominate off road.

Attention off-road warriors, the Discoverer STT Pro tire is our most advanced, extreme and capable off-road tire to date. This is a tire built for the kind of adventure you find at remote destinations.

The Discoverer STT Pro lets you go where others won’t. Rock, mud and dirt have all met their match. Now, go make molehills out of mountains.

Wet Grip

Treadwear

Steering Response

Ride Comfort

Winter Grip

Quiet Ride

Rough Roads

Dry Grip

Trail Performance

*When compared to other Cooper® tires.

Tire specifications

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Discoverer STT Pro Reviews

Cooper Tire Warranties

Discoverer® STT Pro™ comes with a Standard Limited Warranty.

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Warranty protection

Treadwear Protection

The Discoverer STT Pro is NOT protected by a Treadwear Protection Warranty.

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45-Day Test Drive

45-Day Test Drive

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

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Mastering the art and science of tires for 100+ years.

At Cooper, we’ve spent over a century building quality tires that are made to last. Our team of dedicated engineers are the forefront of the latest tire technology, always looking for new ways to heighten the way you drive. Incredible performance, reliable safety and a price that won’t break the bank. That’s what you can expect from Cooper Tire.

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