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Cooper Discoverer AT3 XLT LT315/70R17 E/10PLY WL Tire

Truck/SUV - All Terrain
All Terrain

60K Mile Warranty

Rims Not Included

easy test score

9.6 Superb

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About the Manufacturer:

Founded in 1914 in the United States, Cooper Tires has built a century-long legacy as a cornerstone of the global replacement tire market. Now operating as a subsidiary of the Goodyear Tire & Rubber Company, the brand combines historic American engineering with cutting-edge global resources to deliver exceptional value and durability.

While Cooper boasts a rich motorsport heritage, most notably as the former long-time title partner of the Road to Indy development program, its primary focus today is strictly on consumer-driven innovation and advanced R&D.

Why Drivers Choose Cooper:

American Heritage & Expertise: Over 100 years of tire manufacturing experience, specializing in premium, high-quality aftermarket replacements.

Versatile Engineering: A comprehensive global lineup offering advanced safety, longevity, and rugged all-terrain capability.

Broad Vehicle Coverage: Reliable, budget-friendly performance engineered specifically for passenger cars, CUVs, SUVs, light trucks, and commercial vehicles.

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Specifications

Specs

Value

Description

Sidewall

Describes the sidewall appearance. Examples: BSW= Black Side Wall, WSW = White Side Wall, OWL = Outlined White Letters.

Load Index

121/118

The load index (LI) is a 2- or 3-digit number that correlates to the maximum amount of weight the tire can carry. For example, a tire with a load index of 87 indicates that the tire can carry a maximum load of 1,201 lbs. In this particularly example, 4 tires (each with a load index of 87) can carry a maximum of 4,804 lbs. Refer to your vehicle owner's manual for the recommended minimum load index.

Speed Rating
Tires speed rating

Speed rating (SR) indicates the maximum speed the tire can achieve. Higher speed ratings are typically associated with better handling capabilities. Refer to your vehicle owner's manual for the recommended minimum speed rating.

Load Range/Ply Rating

E/10PLY

Ply rating, more commonly referred to as load range, represents the strength and durability of the tire. Higher ratings may indicate your tires can handle heavier loads.

UTQG

Not Available

To help consumers evaluate their tires, the U.S. National Highway Traffic Safety Administration (NHTSA) created the Uniform Tire Quality Grading System (UTQG). The UTQG rates tires are rated on their tread-wear, traction performance, and temperature resistance. The grade for each of these can be found on the sidewall of your tire (except for winter tires and certain light truck tires).

Max Single Load(lbs)

3195

The maximum load this tire will support. Remember to multiply this number by the number of tires installed on your vehicle to get the maximum carrying capacity. This number is directly related to the Load Index.

Max Single Air Pressure(PSI)

The maximum air pressure this tire will support. This does not represent the amount of air pressure your tires should have at all times. Consult with your owner's manual to determine the best air pressure you should use for your vehicle.

Tread Depth

17.0

The amount of tread on the tire. Once the tire is worn to 2/32nds, it is considered fully used and should be replaced at that time. Most tires will have tire indicators in the grooves of the tire to help you determine when the tires are worn down to 2/32nds.

Tread Design

Nondirectional

The pattern of the grooves, lugs, voids, and sipes on a tire's surface. This design affects the tire's traction, handling, and noise characteristics. Common types include symmetrical (uniform pattern across the tire), asymmetrical (different patterns on the inside and outside for varied road conditions), and directional (designed to rotate in one direction for improved wet traction and hydroplaning resistance).

Rim Width Range

8.0-11.0

The approved wheel rim width range this tire will support.

Measured Rim Width

9.5

The recommended wheel width as recommended by the tire manufacturer to get the best wear us performance for this tire.

Section Width

12.6

The measurement from sidewall to sidewall.

Tread Width

Not Available

The measurement from one side of the tread to the other side of the tread.

Overall Diameter

34.3

The height of the tire when fully inflated.

Manufacturer Part Number

170215027

Manufacturer part number (sku)

Financing

You can pre-qualify to finance your tires, or you can simply choose Affirm at check-out. Fill out your information and choose the monthly payment that works best for you!

Select 3, 6 or 12 monthly payments, with rates from 10% - 36% APR. 18 months financing available for orders over $1000.00

Checking your eligibility won't affect your credit. You will receive an immediate answer from Affirm.

Affirm has no hidden fees or costs and is completely secure.
Quick and easy, real tire financing, real fast! You can apply in advance and know you can shop for tires when you are ready.

To learn more visit Buy With Affirm or read their convenient Affirm FAQ's. All credit decisions are made by Affirm.

To contact Affirm regarding your account, please call 1-855-423-3729.

No hidden fees

Affirm has no hidden fees or costs and is completely secure

Flexible

You choose the payment schedule that works for you

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Pay over time

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Learn more about Affirm tire financing options

No Credit? No problem!

Lease your tires with Katapult!

With a small down payment, and easy payments you can lease your tires. Payments are coordinated with your payday. Read more here about how Katapult works.

No credit required

Simple initial payment

No late fees ever

Payoff early is desired

Learn more about Katapult lease-to-own tire financing

Size Details

Size	Load Index/ Speed index	UTQG	Load Range/Ply Rating	Overall Diameter	Section Width	Rim Width Min	Rim Width Max	Rim Width Meas	Tread Depth (in)	Max Single Air Pressure (PSI)	Max Single Load (lbs)	Max Dual Air Pressure (PSI)	Max Dual Load (lbs)	MFG #
31X10.50R15	109R	-	C/6PLY	30.2	10.6	7.0	9.0	8.5	17.0	50	2270	-	-	170023027
32X11.50R15	113R	-	C/6PLY	31.4	11.6	8.0	10.0	9.0	17.0	50	2535	-	-	170027027
33X12.50R15	108R	-	C/6PLY	32.3	12.6	8.5	11.0	10.0	17.0	35	2205	-	-	170028027
35X12.50R18	128R	-	F/12PLY	34.9	12.5	8.5	11.0	10.0	17.0	80	3970	-	-	170049002
35X12.50R20	125R	-	F/12PLY	34.6	12.5	8.5	11.0	10.0	17.0	80	3640	-	-	170050002
37X12.50R17	124R	-	D/8PLY	36.5	12.5	8.5	11.0	10.0	18.0	50	3525	-	-	170041002
LT265/60R20	121/118R	-	E/10PLY	32.5	10.7	7.5	9.5	8.0	16.0	80	3195	80	2910	170031002
LT265/70R18	124/121S	-	E/10PLY	32.6	10.7	7.0	9.0	8.0	16.5	80	3525	80	3195	170030027
LT275/55R20	120/117S	-	E/10PLY	31.8	11.2	7.5	9.5	8.5	16.0	80	3085	80	2835	170022002
LT275/60R20	123/120S	-	E/10PLY	32.9	11.0	7.5	9.5	8.0	16.0	80	3415	80	3085	170043002
LT275/65R20	126/123S	-	E/10PLY	34.21	11.1	7.5	9.5	8.0	16.0	80	3750	-	-	170204027
LT275/65R20	126/123S	-	E/10PLY	34.2	11.1	7.5	9.5	8.0	16.0	80	3750	80	3415	170044002
LT275/70R18	125/122S	-	E/10PLY	33.2	11.1	7.0	8.5	8.0	16.0	80	3640	80	3305	170026027
LT285/55R20	122/119R	-	E/10PLY	32.3	11.7	8.0	10.0	9.0	16.0	80	3305	80	3000	170032002
LT285/60R20	125/122S	-	E/10PLY	33.7	11.3	8.0	10.0	8.5	16.0	80	3640	80	3305	170042002
LT285/65R18	125/122S	-	E/10PLY	32.56	11.6	8.0	10.0	8.5	16.0	80	3640	-	-	170251027
LT285/65R18	125/122S	-	E/10PLY	32.5	11.6	8.0	10.0	8.5	16.0	80	3640	80	3305	170052002
LT285/65R20	127/124S	-	E/10PLY	34.5	11.5	8.0	10.0	8.5	16.0	80	3860	80	3525	170045002
LT285/70R17	121/118S	-	E/10PLY	32.8	11.4	7.5	9.0	8.5	17.0	80	3195	-	-	170212027
LT285/70R17	121/118S	-	E/10PLY	32.8	11.4	7.5	9.0	8.5	17.0	80	3195	80	2910	170053002
LT285/75R16	126/123R	-	E/10PLY	32.6	11.6	7.5	9.0	8.0	17.0	80	3750	80	3415	170025027
LT285/75R17	121/118S	-	E/10PLY	33.8	11.5	7.5	9.5	8.0	17.0	80	3195	80	2910	170035002
LT285/75R18	129/126S	-	E/10PLY	34.8	11.5	7.5	9.5	8.0	17.0	80	4080	80	3750	170038002
LT295/60R20	126/123S	-	E/10PLY	34.1	11.5	8.0	10.0	8.5	16.5	80	3750	80	3415	170036002
LT295/70R17	121/118R	-	E/10PLY	33.4	11.9	7.5	10.0	8.5	17.0	80	3195	80	2910	170039027
LT295/70R18	129/126S	-	E/10PLY	34.3	12.0	7.5	10.0	8.5	17.0	80	4080	80	3750	170034002
LT295/75R16	128/125R	-	E/10PLY	33.3	11.9	7.5	9.5	8.0	17.0	80	3970	80	3640	170040027
LT305/55R20	121/118S	-	E/10PLY	33.35	12.2	8.5	11.0	9.5	16.0	65	3195	-	-	90000032605
LT305/55R20	125/122S	-	F/12PLY	33.4	12.2	8.5	11.0	9.5	16.0	80	3640	80	3305	170051002
LT305/65R18	124/121S	-	E/10PLY	33.6	12.2	8.5	11.0	9.0	16.5	65	3525	-	-	170037002
LT305/70R16	124/121R	-	E/10PLY	32.7	12.2	8.0	9.5	9.0	17.0	65	3525	-	-	170024027
LT305/70R17	121/118R	-	E/10PLY	33.9	12.2	8.0	9.5	9.0	17.0	65	3195	65	2910	170033002
LT315/70R17	121/118S	-	E/10PLY	34.3	12.6	8.0	11.0	9.5	17.0	65	3195	-	-	170215027
LT315/70R17	121/118S	-	E/10PLY	34.3	12.6	8.0	11.0	9.5	17.0	65	3195	65	2910	170046002
LT315/75R16	127R	-	E/10PLY	34.4	12.4	8.0	11.0	8.5	17.0	65	3860	-	-	170029027
LT325/60R18	124/121R	-	E/10PLY	33.35	13.0	9.0	12.0	9.5	16.5	65	3525	-	-	90000032624
LT325/60R20	126/123R	-	E/10PLY	35.35	13.0	9.0	12.0	9.5	16.5	65	3750	-	-	170253027
LT325/65R18	127/124R	-	E/10PLY	34.61	13.0	9.0	12.0	9.5	16.5	65	3860	-	-	170048002