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Tire Size

You can find these numbers on the sidewall of your tire.

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

Discoverer® RTX™

Fits SUVs and Trucks

  • On and off-road traction to keep you in control on various surfaces
  • Reduces stone retention for added durability
  • Increases control and traction on soft surfaces and snow

all-season

Discoverer® RTX™

Fits SUVs and Trucks

  • On and off-road traction to keep you in control on various surfaces
  • Reduces stone retention for added durability
  • Increases control and traction on soft surfaces and snow

Shop for the Discoverer RTX exclusively at these retailers.

Tires for aggressive style and all-around performance.

The Discoverer RTX tire doesn’t just look mean, it delivers serious performance on almost any terrain. These tires deliver stellar on-road and off-road capability. You can travel with confidence wherever you go, from pounding the pavement to tearing up the trails.

Discoverer RTX

Tires for aggressive style and all-around performance.

The Discoverer RTX tire doesn’t just look mean, it delivers serious performance on almost any terrain. These tires deliver stellar on-road and off-road capability. You can travel with confidence wherever you go, from pounding the pavement to tearing up the trails.

Tire specifications

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Discoverer RTX Reviews

Cooper Tire Warranties

Discoverer® RTX™ comes with a None.

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Warranty protection

Cooper Tire Warranties

The Discoverer RTX™ is NOT protected by a Treadwear Protection Warranty.

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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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