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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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Vehicle Identification Number

Located on the driver’s side dashboard and viewable through the windshield.

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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
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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.

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 RTX Reviews

Cooper Tire Warranties

Discoverer® RTX™ comes with a Standard Limited Warranty.

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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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