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Cooper Discoverer A/T3 4S

View all P255/70R-18 Tires
  • Part Number: 90000032701
  • Service Description: 113 T
  • UTQG: 620AB
  • Sidewall: OWL
  • Load Range: B (4 Ply)
  • Treadlife Warranty: 65000 miles
  • Type: Passenger All Season
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$ 189.99

$759.96 Set of 4

You save $ 85.00 per tire
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Cooper Discoverer A/T3 4S Overview

An all-season, all-terrain tire, Cooper Tires' Discoverer AT3 4S is designed for use on light trucks and SUVs and offers drivers grip on rocky, smooth, wet, and snowy surfaces plus a 65,000-mile limited tread life warranty.

Features & Benefits

  • All-season tread
  • Outlined White Letter sidewall
  • 65,000-mile limited manufacturer tread life warranty
  • Features a Three Peak Mountain Snowflake certification thanks to its ability to perform in severe snow
  • Whether conquering trails on the weekends or simply needing a tire that performs through snow and rain, today's light truck and SUV drivers often search for a tire that can do it all. Featuring Adaptive-Traction Technology that provides grip on any surface, the Discoverer AT3 4S from Cooper Tires combines on-road comfort with off-road durability. Saw shaped grooves within the tread deliver superior traction on snowy surfaces, which helps the Discoverer AT3 4S to stop 20 feet shorter on snow than leading competitors. Featuring a five rib, all-terrain pattern that allows for strong off-road grip plus improved wet and dry traction, the Discoverer AT3 4S includes zigzag sipes that improve stability and control while also forcing out stones to prevent damage.

Tire Specifications

Discoverer A/T3 4S Tire Specifications

Size UTQG Max. Load Inflation Pressure Tread Depth Rim Width Range Sect. Width Tread Width Overall Diam
P255/70R-18 620AB 2,535 lbs N/A 14/32nds N/A N/A N/A N/A

Purchase includes the Cooper Discoverer A/T3 4S tire only. The wheel rim shown in the picture is not included. Picture provided is a stock picture from the manufacturer and may or may not reflect the actual product being ordered.

All Cooper Discoverer A/T3 4S tires are continuously developing with manufactured improvements. With that said, Simple Tire and the manufacturers have the right to change these tire specifications at any time without notice or obligation.

If you have any questions, please email us at

Please Note: Specifications of the Cooper Discoverer A/T3 4S tires shown above are listed to be as accurate as possible based on the information provided to us by Cooper tires.

Available Sizes & Prices

Discoverer A/T3 4S Available Sizes & Prices

Size Serv. Desc. UTQG Sidewall Part Number Price Qty
P255/70R18 113T 620AB OWL 90000032701 $759.96 set of 4 $189.99 View Details
215/65R17 99T 620AB OWL 90000032941 $667.96 set of 4 $166.99 View Details
P215/70R16 100T 620AB OWL 90000032676 $491.96 set of 4 $122.99 View Details
P225/70R16 103T 620AB OWL 90000032677 $551.96 set of 4 $137.99 View Details
P225/70R15 100T 620AB OWL 90000032670 $527.96 set of 4 $131.99 View Details
P225/75R16 104T 620AB OWL 90000032683 $495.96 set of 4 $123.99 View Details
P235/60R17 102T 620AB OWL 90000032687 $679.96 set of 4 $169.99 View Details
P235/65R17 108T 620AB BW 90000032688 $623.96 set of 4 $155.99 View Details
P235/70R16 106T 620AB OWL 90000032678 $543.96 set of 4 $135.99 View Details
P235/70R17 109T 620AB OWL 90000032691 $683.96 set of 4 $170.99 View Details
P235/75R15 105T 620AB OWL 90000032674 $479.96 set of 4 $119.99 View Details
P235/75R16 108T 620AB OWL 90000032684 $555.96 set of 4 $138.99 View Details
P235/75R15 109T 620AB OWL 90000032673 $503.96 set of 4 $125.99 View Details
P235/75R17 109T 620AB OWL 90000032696 $607.96 set of 4 $151.99 View Details
P245/65R17 111T 620AB OWL 90000032706 $679.96 set of 4 $169.99 View Details
245/70R16 111T OWL 90000032679 $583.96 set of 4 $145.99 View Details
P245/70R16 107T 620AB OWL 90000032680 $579.96 set of 4 $144.99 View Details
P245/70R17 110T 620AB OWL 90000032692 $667.96 set of 4 $166.99 View Details
P245/75R16 111T 620AB OWL 90000032685 $567.96 set of 4 $141.99 View Details
P255/65R17 110T 620AB OWL 90000032689 $719.96 set of 4 $179.99 View Details
P255/70R15 108T 620AB OWL 90000032671 $599.96 set of 4 $149.99 View Details
P255/70R17 112T 620AB OWL 90000032693 $687.96 set of 4 $171.99 View Details
P255/70R16 111T 620AB OWL 90000032681 $619.96 set of 4 $154.99 View Details
P255/75R17 115T 620AB OWL 90000032697 $759.96 set of 4 $189.99 View Details
P265/50R20 111T 620AB OWL 90000032705 $831.96 set of 4 $207.99 View Details
P265/60R18 110T 620AB OWL 90000032698 $779.96 set of 4 $194.99 View Details
P265/65R18 114T 620AB OWL 90000032699 $775.96 set of 4 $193.99 View Details
P265/65R17 112T 620AB OWL 90000032690 $683.96 set of 4 $170.99 View Details
P265/70R15 112T 620AB OWL 90000032672 $623.96 set of 4 $155.99 View Details
P265/70R16 112T 620AB OWL 90000032682 $639.96 set of 4 $159.99 View Details
P265/70R17 115T 620AB OWL 90000032694 $639.96 set of 4 $159.99 View Details
P265/70R18 116T 620AB OWL 90000032702 $779.96 set of 4 $194.99 View Details
P265/75R15 112T 620AB OWL 90000032675 $591.96 set of 4 $147.99 View Details
P265/75R16 116T 620AB OWL 90000032686 $623.96 set of 4 $155.99 View Details
P275/55R20 117T 620AB OWL 90000032703 $799.96 set of 4 $199.99 View Details
P275/60R20 115T 620AB OWL 90000032704 $799.96 set of 4 $199.99 View Details
P275/65R18 116T 620AB OWL 90000032700 $819.96 set of 4 $204.99 View Details
P285/45R22 114H 620AB OWL 90000032943 $903.88 set of 4 $225.97 View Details
P285/70R17 117T 620AB OWL 90000032695 $787.96 set of 4 $196.99 View Details

Treadlife Warranty

Discoverer A/T3 4S Treadlife Warranty

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.

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Ratings & Reviews

Cooper Discoverer A/T3 4S

Summary Customer Reviews


(Based on 7 Reviews)
Dry Wet Snow Comfort Noise Treadwear
5 .0
5 .0
5 .0
5 .0
5 .0
5 .0
Was not impressed with snow traction, but I have had Nokian AT Plus tires. Snow traction diminished about 1/2 tread. The tire did great on dry pavement right up to the 63k miles where I am taking them off. They have 4/32 tread left. They are now dangerous on wet pavement. They was great on wet roads when newer. Mud traction was on par with most all terrain tires, anyone that says all terrain tires are good in mud has never had mud tires. Hard pack, rock, gravel, tires performed fine. Fuel mileage suffered very little over the stock Goodyear's highway tires that came on the ram 1500 4x4 eco diesel. I drive between 1000 to 1600 PER WEEK. 600 To job site and back home on interstate. I do power line work in the Appalachian mountain range. These tires have been used off road with no failures. Cooper has a winner here.
Bought these tires for a trip to Denver over the Christmas holiday. Temperatures never got above 20 degrees f. Tires road and handled great with a fully loaded vehicle. Traction in ice and snow was never an issue. Would buy these tires again.
I live in the Vail Valley at 7,000 feet elevation. These are great all season tires for living here. I have run Cooper tires for over 13 years. I used to run the old ATR 10ply and got 50k miles out two sets of them on an old Titan. I have noticed that many of the full-size emergency vehicles up here in the mountains run the 10 ply ATR and newer AT3s. They get such good wear and traction in all conditions that they make a great choice for all our weather here without having to switch over to different tires for different seasons. I switched to the P-Rated tires for a few of my newer Chevrolet 1500 series because I have a lift and wheels set up where 10 plys are not available and I wanted to keep the ride as smooth as possible. I got less miles from the older AT3 P-rated tires by far. I am hopeful that I will get better tread life from the new compound in the AT3-4S P-rated series. They seem quieter, smoother and have a firm feeling sidewall for towing my 7K lb trailer. The winter tread is as good or better then the older sets I have had and I rarely switch into 4WD even when the roads are covered in snow. Snow and wet braking and acceleration are very good. If the tires do break free (from me over driving the conditions) they are very predictable and regain traction quickly. I cannot comment on wear as I have only put a few thousand miles on them so far.

Cooper Discoverer A/T3 4S P255/70R-18

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