Cooper Discoverer Rugged Trek LT 37X12.50R20LT E Discoverer Rugged Trek LT
Cooper

Discoverer Rugged Trek LT

37X12.50R20LT E
All-Season M+S
$414.74/tire $552.99
Set of 4: $1658.96
Minimum order: 4 tires (sizes can be mixed) ? Selling in sets of 4 is how we keep our prices this low — and a matching set keeps your car balanced and safe.
Most drivers replace all four for even wear and handling.
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Specifications

Size37X12.50R20LT E Discoverer Rugged Trek LT
Width37 mm
Aspect ratio
Rim diameterR20
Load index126
Speed ratingQ
Ply rating10
SeasonAll-Season
Treadwear warranty55,000 miles
Tread depth19/32"
Weight66.69 lbs
Max pressure65 psi
Severe snow (3PMSF)No
Run-flatNo

About the Cooper Discoverer Rugged Trek LT

Mud-Terrain Passenger Light Truck/SUV tire.

Features

* Dual off-road sidewalls, both sides offering long, deep cleats* Earth Diggers™ Technology with large shoulder scoops and lugs* Jutting ridges expel lodged stones* Stable Trac™ Technology - omni-directional, micro-gauge siping* Whisper Grooves™ Technology - specially designed sound barrier walls* M+S Rated* Free 45-Day Test Drive* 55,000 Mile Limited Treadwear Warranty - (LT sizes)

Benefits

* Enhance off road traction* Combine to forcefully dig into dirt, sand and mud* Protect against damage from sharp rocks* Enhances traction on roads and rough surfaces, improving stability and control* Reduce road noise

Understanding the 37X12.50R20LT E size

In the size code 37R20, 37 is the section width in millimetres (about 1.5"). R20 means radial construction on a 20-inch wheel.

The load index 126 means each tire supports up to 3,748 lbs — about 14,992 lbs across a full set of four. The speed symbol Q certifies the tire to 99 mph under its rated load. Always match or exceed the load index and speed rating listed on your vehicle's door-jamb placard.

What the Cooper Discoverer Rugged Trek LT is built for

The Cooper Discoverer Rugged Trek LT is an all-season tire, balancing dry grip, wet traction and tread life across spring, summer and autumn conditions. It carries an M+S (mud and snow) marking for light winter service. It is classified for mud-terrain (m/t) use.

Price and value

At $414.74 per tire, a full set of four costs $1658.96. That sits close to the average for the 75 tires we stock in this size. Backed by a 55,000-mile treadwear warranty, that works out to roughly $30.16 per 1,000 miles across the set.

Frequently asked questions

What does the tire size 37R20 mean?

37 is the section width and R20 indicates radial construction for a 20-inch wheel.

What are the load and speed ratings of the Cooper Discoverer Rugged Trek LT 37X12.50R20LT E?

Its load index of 126 allows up to 3,748 lbs per tire. Its speed rating of Q is certified to 99 mph. Check your door-jamb placard and do not fit a tire rated below the vehicle's requirement.

How much does a set of 4 Cooper Discoverer Rugged Trek LT 37X12.50R20LT E tires cost?

A single tire is $414.74 and a set of four is $1658.96, covered by a 55,000-mile treadwear warranty.

Does the Discoverer Rugged Trek LT come in other sizes?

Yes — we stock 31 additional Discoverer Rugged Trek LT sizes besides 37X12.50R20LT E. Fit only a size approved for your vehicle.

Other sizes of this model

Similar tires in 37/R20