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305-55r20 tires

Discoverer STT Pro

Mud Terrain tires offer drivers traction on off-road terrains such as mud, dirt, sand, gravel, and rock, and are commonly used on CUVs, SUVs, light trucks, and jeeps.

Designed for use on light trucks and SUVs such as the Ram 1500, Ford F-150, and Chevrolet Silverado. Light Truck tires are strong enough to support a truck's heavier weight and whatever else is being hauled or towed.

This product is not covered by a manufacturer’s treadlife warranty.

Mileage Warranty

The maximum carrying capacity for a tire determined by the manufacturer  
                (Single wheel applications / Dual wheel applications).

Load Index

Maximum speed capability to safely carry a load for an extended period of time.

Max Speed

The maximum load carrying strength at the specified inflation pressure, also known as ply rating.

The side of the tire between the tread and rim, with cosmetic branding as well as information about the tire including manufacturer, model, size, etc.

Sidewall

Measured in 32nds of an inch, this metric shows how much tread life is left on a tire, with the tire's traction & stopping capabilities greatly diminished at 4/32nds and less. Tire manufacturers include "tire wear bars" at 2/32nds to indicate when your tire is worn out.

Tread Depth

The highest inflation pressure (measured in pounds of force per square inch, PSI) the tire is designed to contain, and should only be used when called for by the vehicle placard.

Inflation Pressure

An identifier of a particular tire line and size combination assigned by the tire manufacturer.

Part Number

Tread design (or tread pattern) can affect handling, traction & noise for different driving styles & road conditions.

Tread Design

Tire Weight

The measurement of width from a tires inner sidewall to the outer sidewall.

Section Width

The range of widths the rim of the vehicle can be for this tire to be safely mounted on.

Rim Range

The diameter of a tire that is inflated without any load applied.

Overall Diameter

Discoverer Rugged Trek

All-terrain tires offer drivers traction on- and off-road, and are typically used by light truck and SUV drivers who want a tire that's able to climb rocks and perform on the highway.

This product is covered by a 55,000 mile manufacturer’s treadlife warranty. Merchandise covered by a manufacturer’s warranty is sold with the warranty by the 
        manufacturer extended to the purchaser. We will be happy to assist in obtaining fulfillment of a manufacturer’s 
        warranty. Other than applicable manufacturers’ warranties, there are no warranties, express or implied, 
        including any warranty of merchantability or fitness for a particular purpose. The only tires SimpleTire can 
        warranty are brand new defects (meaning that they have not been mounted or driven on). Any bead damaged will be 
        void of any warranty claim. Any other adjustments should be taken to the nearest authorized dealer for that 
        manufacturer. Sometimes the manufacturer also provides a treadlife warranty and mileage rating. Please be aware 
        that not all tires hold a mileage warranty from the manufacturer. Different tire models, even from the same 
        manufacturer, may or may not come with a treadlife warranty.

Standards that measure treadwear, temperature resistance and traction, example: "640 A A".  The 640 is the treadwear test and it lasted 6.4 times longer than the comparison tire tested against.  The first "A" is the traction rating using straight-line wet traction on test surfaces (see information tables tab) and the second "A" is the temperature rating by testing operation at high speeds without heat-related failure (see information tables tab).

UTQG

Wet Traction is a piece of the UTQG for example if  UTQG is: 500 AA A, the wet traction piece is the second piece, the "AA".

Wet Traction

145 tires available in 305-55r20

In Size 305-55r20

**Most drivers choose from our top picks**<br />They include the best matches 
                     of this tire size based on popularity, user ratings, and price.

We'll start with our 5 top picks

Consistently rated as excellent by experts with the highest SimpleScore among the top 5 tires.

Top SimpleScore&trade;:

Chosen by our tire experts.

Open Country M/T

Based on verified customer reviews, this tire has been highly rated.

Top rated:

Best customer reviewed tire.

Trail Grappler M/T

Save on this  tire today.

Best deal:

Save even more.

Courser MXT

Molded specifically for optional use with studs. Studs not included. Stud sizes in TSMI (Tire Stud Manufacturer Index). Studs Restricted in certain states.

Studdable

With similar, but improved specs to the factory tire

Best match:

Best match to original tire

Dura Grappler

Highway terrain tires are commonly used on light trucks and SUVs that typically haul materials or need to conquer highways and some off-road terrains.

Most popular among drivers in PA

Best seller:

Go with the best seller

HiCountry RT HR1

This product is covered by a 50,000 mile manufacturer’s treadlife warranty. Merchandise covered by a manufacturer’s warranty is sold with the warranty by the 
        manufacturer extended to the purchaser. We will be happy to assist in obtaining fulfillment of a manufacturer’s 
        warranty. Other than applicable manufacturers’ warranties, there are no warranties, express or implied, 
        including any warranty of merchantability or fitness for a particular purpose. The only tires SimpleTire can 
        warranty are brand new defects (meaning that they have not been mounted or driven on). Any bead damaged will be 
        void of any warranty claim. Any other adjustments should be taken to the nearest authorized dealer for that 
        manufacturer. Sometimes the manufacturer also provides a treadlife warranty and mileage rating. Please be aware 
        that not all tires hold a mileage warranty from the manufacturer. Different tire models, even from the same 
        manufacturer, may or may not come with a treadlife warranty.

A three-peak mountain snowflake (3PMSF) symbol branded on a tire's sidewall indicates the tire meets required performance criteria in snow testing to be considered severe snow service-rated.

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305/55R20 cooper Tires

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Cooper Discoverer STT Pro
LT305/55R20 125Q F | In stock

Category
Mud Terrain
Vehicle
Light Truck
Mileage Warranty
N/A

Load Index
3638 lbs/3307 lbs (125/122)
Max Speed
100 MPH (Q)
Load Range
F (12 Ply)
Sidewall
Blackwall
Tread Depth
20/32nds
Inflation Pressure
80 PSI
Part Number
170146006
Tread Design
Symmetrical
Tire Weight
68.23 lbs
Section Width
12.4"
Rim Range
8.50-11.00"
Overall Diameter
33.5"

Join the SimpleCrew and get exclusive perks.

Cooper Discoverer Rugged Trek
LT305/55R20 125Q F | In stock

Category
All Terrain
Vehicle
Light Truck
Mileage Warranty
55k

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305/55R20 cooper Tires

Cooper Discoverer STT ProLT305/55R20 125Q F | In stock

CategoryMud TerrainVehicleLight TruckMileage WarrantyN/A

Load Index3638 lbs/3307 lbs (125/122)Max Speed100 MPH (Q)Load RangeF (12 Ply)SidewallBlackwallTread Depth20/32ndsInflation Pressure80 PSIPart Number170146006Tread DesignSymmetricalTire Weight68.23 lbsSection Width12.4"Rim Range8.50-11.00"Overall Diameter33.5"

Join the SimpleCrew and get exclusive perks.

Cooper Discoverer Rugged TrekLT305/55R20 125Q F | In stock

CategoryAll TerrainVehicleLight TruckMileage Warranty55k