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305-60r18 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

23 tires available in 305-60r18

In Size 305-60r18

**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

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

Top rated:

Best customer reviewed tire.

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 A/T III

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 65,000 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.

The maximum carrying capacity for a tire determined by the manufacturer.

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".

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305/60R18 cooper Tires

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Cooper Discoverer STT Pro
LT305/60R18 121Q E | In stock

Category
Mud Terrain
Vehicle
Light Truck
Mileage Warranty
N/A

Load Index
3197 lbs/2910 lbs (121/118)
Max Speed
100 MPH (Q)
Load Range
E (10 Ply)
Sidewall
Raised White Lettering
Tread Depth
21/32nds
Inflation Pressure
65 PSI
Part Number
170123034
Tread Design
Symmetrical
Tire Weight
65.32 lbs
Section Width
12"
Rim Range
8.50-11.00"
Overall Diameter
32.68"

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Cooper Discoverer STT Pro
LT305/60R18 126Q F | In stock

Category
Mud Terrain
Vehicle
Light Truck
Mileage Warranty
N/A

Load Index
3748 lbs/3417 lbs (126/123)
Max Speed
100 MPH (Q)
Load Range
F (12 Ply)
Sidewall
Raised White Lettering
Tread Depth
21/32nds
Inflation Pressure
80 PSI
Part Number
170147034
Tread Design
Symmetrical
Tire Weight
65.86 lbs
Section Width
12"
Rim Range
8.50-11.00"
Overall Diameter
32.68"

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you were looking for?

Filter By

305/60R18 cooper Tires

Cooper Discoverer STT ProLT305/60R18 121Q E | In stock

CategoryMud TerrainVehicleLight TruckMileage WarrantyN/A

Load Index3197 lbs/2910 lbs (121/118)Max Speed100 MPH (Q)Load RangeE (10 Ply)SidewallRaised White LetteringTread Depth21/32ndsInflation Pressure65 PSIPart Number170123034Tread DesignSymmetricalTire Weight65.32 lbsSection Width12"Rim Range8.50-11.00"Overall Diameter32.68"

Join the SimpleCrew and get exclusive perks.

Cooper Discoverer STT ProLT305/60R18 126Q F | In stock

CategoryMud TerrainVehicleLight TruckMileage WarrantyN/A

Load Index3748 lbs/3417 lbs (126/123)Max Speed100 MPH (Q)Load RangeF (12 Ply)SidewallRaised White LetteringTread Depth21/32ndsInflation Pressure80 PSIPart Number170147034Tread DesignSymmetricalTire Weight65.86 lbsSection Width12"Rim Range8.50-11.00"Overall Diameter32.68"

Did you find what you were looking for?

Cooper Discoverer STT Pro
LT305/60R18 121Q E | In stock

Category
Mud Terrain
Vehicle
Light Truck
Mileage Warranty
N/A

Load Index
3197 lbs/2910 lbs (121/118)
Max Speed
100 MPH (Q)
Load Range
E (10 Ply)
Sidewall
Raised White Lettering
Tread Depth
21/32nds
Inflation Pressure
65 PSI
Part Number
170123034
Tread Design
Symmetrical
Tire Weight
65.32 lbs
Section Width
12"
Rim Range
8.50-11.00"
Overall Diameter
32.68"

Cooper Discoverer STT Pro
LT305/60R18 126Q F | In stock

Category
Mud Terrain
Vehicle
Light Truck
Mileage Warranty
N/A

Load Index
3748 lbs/3417 lbs (126/123)
Max Speed
100 MPH (Q)
Load Range
F (12 Ply)
Sidewall
Raised White Lettering
Tread Depth
21/32nds
Inflation Pressure
80 PSI
Part Number
170147034
Tread Design
Symmetrical
Tire Weight
65.86 lbs
Section Width
12"
Rim Range
8.50-11.00"
Overall Diameter
32.68"

Did you find what
you were looking for?