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Cooper Discoverer S/T Maxx Tire (Available From 31 in. to 35 in. Diameters)

Item J107066
ExtremeTerrain no longer carries the Cooper Discoverer S/T Maxx Tire (Available From 31 in. to 35 in. Diameters). Please check out 2007-2018 Jeep Wrangler JK Mud Terrain Tires for an updated selection.

Features, Video & Details

  • All-Terrain Tire
  • 3-Ply Armor-Tek 3® Carcass
  • Cut and Chip-Resistant
  • Low Road Noise Characteristics
  • Remarkable On-Road and Wet Traction
  • Silica Blended Natural Rubber Compound
  • Hybrid 4-5 Rib Tread Design
  • Various Size Options Available
  • Standard Limited Warranty
  • Road Hazard Protection Plan Available
  • Fits All 1987-2019 Jeep Wrangler Models

Review & Installation Video

Review & Install Video

Manufacturer Ratings
  • Symmetrical

    Symmetrical tires can be rotated in many different ways to prolong their life.

Customer Ratings
  • Dry Traction 5/5 5
  • Wet Traction 4.5/5 4.5
  • Snow Traction 4.7/5 4.666667
  • Road Noise 4/5 4
  • Onroad Ride Quality 4.7/5 4.666667
Tire Size Wheel Width Tire Diameter Tread Depth Revs Per Mile Weight (lbs)
Discover the Trail Ahead. The Cooper Discoverer S/T Maxx All-Terrain Tire embodies its own name in its function, giving your Wrangler the means to tackle the toughest terrain in any condition. Its 3-ply Armor-Tek 3® carcass and unique, dynamic tread pattern with a tough rubber compound ensures you can roll over any terrain with ease.

Innovative Trail Features. The S/T Maxx goes beyond blunt strength with its unique 4-5 rib tread pattern. An enhanced buttress and stone ejector ribs tackle loose gravel and shifting surfaces with ease. The carcass's Armor-Tek design allows it to take hits to the sidewall and continue powering through the trail.

Natural Rubber Compound. Cooper manufactures their S/T Maxx Tires with a silica-enhanced natural rubber compound to provide exceptional wet traction and confident handling both on and off the road. This compound is both cut and chip-resistant which allows you to drive over jagged terrain with confidence.

Low Noise. In addition to providing outstanding performance on the toughest of off-road terrains, the Cooper S/T Maxx Tire delivers remarkable on-road traction, stability and low noise characteristics. This makes the S/T Maxx ideal for use on any daily driving Jeep Wrangler without sacrificing ride comfort.

Standard Limited Warranty. The Cooper Discoverer S/T Maxx Tire comes with a standard limited warranty from the manufacturer which begins from the date of purchase. Some limitations do apply. Please see the Full Cooper Tires Warranty disclosure for full details.

Application. This Cooper Discoverer S/T Maxx is designed for use on 1987-2019 YJ, TJ, JK and JL Jeep Wrangler models. Please choose your size from the ordering options above. Sold individually.

Fitment: Details

Mounting & Balancing ExtremeTerrain offers professional mounting and balancing on all wheels and tires when purchased together on the same order for an additional fee. This will allow you to swap out your old wheels for your new set when they arrive.

  • State of the Art On-Site Tire Facility
  • Scratch Free Mounting Process
  • Environmentally Friendly, Lead Free Wheel Weights
  • 1 to 2 Business Day Turn Around Time on Most Orders

CA Residents: WARNING: Cancer and Reproductive Harm -

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        Customer Reviews (7) Write a Review

        Overall Rating 4.7

        out of 5 stars

        • Dry Traction 5 5
        • Wet Traction 4.5 4.5
        • Snow Traction 4.666667 4.7
        • Road Noise 4 4
        • Onroad Ride Quality 4.666667 4.7

        • 5/5

          March 10, 2019

          Great tires

          Aggressive looking tires, great for any road and weather condition, got a lot of jealous looks on the road


          Year: 2015Submodel: Wrangler

          Helpful (1)

        • 5/5

          November 22, 2018

          Great tire

          Excellent customer support and shipping from ET. Tire is very smooth on the road, virtually no road noise from a 35 12.5x20 with this aggressive of a tread, I was pleasantly surprised. They grip the road well in wet conditions and with winter fast approaching in northern Ohio I’m excited to see what they’ll do !

          Tom R

          Year: 2012Submodel: Wrangler

          Helpful (7)

        • 5/5

          November 03, 2018

          Cooper Discoverer

          Nice tire. little to no road noise, exactly what I was looking for.


          Year: 2012Submodel: Wrangler

          Helpful (5)

        • 5/5

          February 21, 2018

          Perfect !

          This the perfect tire for both on and off road and performs great in the snow. There was a slight increase in road noise from my stock tires but I guess that's to be expected. Fast shipping and excellent service from Extreme Terrain.


          Year: 2015Submodel: Wrangler

          Helpful (6)

        • 5/5

          January 05, 2018

          Cooper S/T Maxx

          I’ve had these tires in my ‘13 Wrangler for about 6 months and I have zero complaints. They’ve done great in mud, on rock and in snow.


          Year: 2013Submodel: Wrangler

          Helpful (8)

        • 5/5

          April 26, 2017

          Great tire

          The person that thought these tires are harsh likely was running too much air. They are, after all, a heavy ply tire. On my JK with 28 to 30 psi and Rancho 9000XL set to 1/1, it rides better than stock. Best part is they last forever and have excellent Off-Road traction. Very quiet.


          Year: 2014Submodel: Wrangler

          Helpful (9)

        • 3/5

          January 19, 2017

          Review from Cooper Discoverer S/T Maxx Tire - 35X12.50R15


          This isn't a typical brand you think of when it comes to all terrains but they are pretty alright. However I think they are less grippy and surprisingly more harsh than KO2s. I would probably spend the extra cash on bf goodrich


          Year: 2016Submodel: Wrangler

          Helpful (7)

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