Cooper

Discoverer® Stronghold™ AT

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  • 60k mi Warranty
  • All-terrain
  • 3PMSF
Fits Heavy Duty Pickup Trucks
  • Grip on many different surfaces, including tough dirt and gravel
  • Stands up to heavy loads and long highway hauling
  • Winter capable with the Severe Snow Designation on all sizes

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Tire Features

Solid Traction in Dirt and Gravel

Wide open grooves in the tread grab and release soft surfaces, while the narrower center grooves help to provide stability.

Strength that Lasts the Test of Time

Strong shoulder design features such as scooped tread edges, wide tread grooves, and sidewall hook pattern all help provide grip and traction for the life of the tire.

Protection from Demanding Environments

Strategically designed tread lugs help to resist cracking, tearing, and rounding of the tread. Ledges between the lugs help prevent stones getting stuck in tread.

No Slip, No Problem

A specialized rubber compound and wide lateral grooves help plow through water.

Great Snow Traction

Textured edges on the shoulders grab into snow to help provide traction in harsh winter conditions.

Three-Peak Mountain Snowflake Designation

Tires designed for use in severe snow conditions and meet specific snow performance test requirements.

Warranties & Guarantees

Standard Limited Warranty

This tire is eligible for the Standard Limited Warranty.

Exclusions apply; see full warranty for details.

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Cooper 45-Day Satisfaction Guarantee

Our satisfaction pledge gives you 45 days to decide whether to keep select tires or exchange them for a different set of tires.

Exclusions apply; see full warranty for details.

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Tread Wear Protection

We know you want to get the most out of your tires. That’s why we confidently back this tire with a warranty that helps protect you in the case of premature treadwear.

60,000 mi./ 95,000 km

Exclusions apply; see full warranty for details.

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Tire Specifications
Tire Specifications

Full Specs

Rim Diameter
Tire Size
  • Load Range

    F
  • Load Index

    125.0
  • Speed Rating

    R
  • Measured Rim Width (in.)

    10.0
  • Section Width (mm)

    35
  • Revs Per Mile

    603
  • Max Load (lbs)

    3640
  • Max Inflation Pressure (PSI)

    80
  • Outside Diameter (in.)

    34.52
  • Tread Depth (in 32nds)

    17
  • Tire Size

    35/12.5R20
  • Approved Rim Width (in.)

    8.5-11.0