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Cooper Discoverer A/T3 4S

Car Talk'sBest Truck Tires

Starting at $163.99

Car Talk'sBest Truck Tires

Car Talk'sBest Truck Tires

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16 reviews

16 on SimpleTire


overall rating


Would you buy again?

Review breakdown

  • 8 out of 100
  • 7 out of 100
  • 0 out of 100
  • 1 out of 100
  • 0 out of 100














16 SimpleTire reviews

Suzuki XL-7 2008 Limited
Verified Customer
Aug 12, 2021

The second set on my favorite lady's suv she has been more comfortable with the tires and I have been relieved. She drives 50 miles round trip in NE Ohio.

Toyota Tundra 2019 Limited w/aluminum wheels
Verified Customer
Jun 16, 2021

Verified Customer
Sep 17, 2020

One of the best tires cooper has ever made. Ive have been buying cooper tires for a long time. 10+ years. ive had the STT, the ST, Zeon rs3-a, rs3-s, cobra, cs2, cs3, cs4, weathermaster, discoverer m+s, etc and these at3's are one of the best. Right now they are on my 2015 f150 supercrew 4x4 and have been for 20,000 miles. the tires still look new, even with the occasional burnout (cause i keep them rotated). they are super quiet at highway speeds and even at 100+ mph. they handle excellent on drive payment, i can take 35mph corners at 60 with only a little sequel from them. which is impressive for 5500lb truck. even in the rain i can still take the same corner at 45mph but after that the front end looses grip and starts pushing. In the snow they are 10x better than the old hankook dynapros that came on the truck. they provide tons of grip in the snow but not too much that i cant drift it and in 4x4 with the diffs locked i can push snow with the front bumper. ice is where they seem to fail but that is expected from any tire without studs in them. Highly recommend you get these if you have a truck

Seth M
Verified Customer
Aug 15, 2020

Great all season traction. Especially winter. Wear a little faster than expected with scheduled rotations. But overall a great tire.

Verified Customer
Jul 9, 2020

By far the best money I ever spent on tires would never buy another brand again best tires I ran on my f150 since I owned it

Verified Customer
May 21, 2020

We have only had these tires for a month with about a thousand miles on them. So far I am very pleased with the tire quality and build. They have only been test on dry road and have performed very well on the Suburban. I am very interested in how the tire will perform this winter. Overall I am very happy with the tire but can only comment on their performance on dry road.

Verified Customer
May 17, 2020

I can't say for sure about winter because it was ending when I installed them, but there was some snow. These are good on dirt roads. My last tires sunk in and moved in the flow of the mud. These stay in control on dirt. I am still not going as fast on dirt as other traffic because there is some kind of crunching that the car didn't do before: maybe It is the shocks, as I go over various rocks and bumps. Rain driving has a slight hydroplaning but it is better than my last tires, which were good ones. It gets windy here. Braking is good. Overall good choice for farm area.

Verified Customer
Mar 31, 2020

Gary L
Verified Customer
Jan 18, 2020

Fantastic company with all questions answered quickly before hand by multiple people glad to get the business. Shipping was one day ahead of schedule and was free. Will use from now on.

Verified Customer
Jul 30, 2019

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.

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Get technical:

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.

Mileage Warranty
65 k
Load Index
1709 lbs (99)
Max Speed
118 MPH (T)
Load Range
Standard (SL)
Outlined White Lettering
Wet Traction
Tread Depth
Inflation Pressure
44 PSI
Part Number
Section Width
Rim Range
Overall Diameter
Three-Peak Mountain Snowflake (3PMS)
Tread Design

Best Rated All Terrain Tires


Discoverer A/T3 4S ∙ 44 sizes available