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Cooper Discoverer AT3 4S 255/50/R20 109H

In stock. Estimated Delivery:
Mon, 15 Jul 2024 - Thu, 18 Jul 2024


255/50R20 109H B COP DSCVR AT34S

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30 Days Free Return

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The Cooper Discoverer AT3 4S is an all-terrain tire that’s doing it all. Designed to handle aggressive off-road driving situations and to provide world-class ride comfort, the AT3 4S Cooper’s answer for the 4×4 enthusiast who wants an AT they can live with.

Cooper Discoverer AT3 4S Features

Think of the Discoverer AT3 4S as a bodyguard in a business suit. It’s durable and ready for the rough stuff, but it’s also maybe even a little unassuming compared to the tread and sidewall designs of other aggressive all-terrain tyres out there.

In fact, the truth of this Cooper Discoverer is that it’s ready for anything. Loaded with Cooper’s cutting-edge tire development technologies, it’s a tire that’s built to last and lay down comfortable performance on any type of on or off-road condition.

Specific performance features of the Cooper Discoverer AT3 4S include:

  • Micro-Gauge zigzag sipes increase stability and control for wet and dry traction while reducing the possibility of rocks getting stuck in its tread.
  • Its Secure-Gripall-terrain tread design packs in five ribs for increased flexibility and support when off-roading.
  • Hydroplaning resistant Aqua Vac Channelsin its deep center grooves make the AT3 4S easier to control on wet roadways.
  • Snow Groove Technology is Cooper’s difference-maker in winter weather, which traps and packs snow into the AT3 4S’ tread to provide sticky traction when you need it most.

Compared to prior Cooper Discoverer and Cooper Discoverer AT3 tyres, it even reduces braking distances on snow by an average of 20 feet. When it comes to performance, comfort and safety, the AT3 4S could be the perfect tire for your truck or SUV.

Cooper Discoverer AT3 4S Treadwear and Warranty

But maybe the best Discoverer AT3 4S feature is Cooper’s 65,000-mile manufacturer warranty—one of the best currently available for an all-terrain tire like this one. With sizes from 15-inch wheel diameters on up to 22-inches, there’s an AT3 4S that offers pound-for-pound value for your truck or SUV no matter how you use it.

But if you want added protection for your new set of Coopers, Discount Tire’s exclusive Certificates will cover them on down to 3/32" of wear.

(You can add our Certificate coverage in the cart of your order.)

For a tire that’s great at everything (ride comfort, long-lasting wear, safety in all seasons, off-road capability) the Cooper Discoverer AT3 4S could punch your ticket to a reliable and performance-ready ride.

Additional information



Load Index


Load Range


Mileage Warranty


Max Air Pressure




Side Wall Description

Black Side Wall


255 /50 R20 109H XL BSW

Speed Rating

Up to 130 mph





Overall Diameter




Tread Depth


Rim Width Range

6.5 – 9.5



Here are the details of our shipping policy:
  • Free Shipping:We’re delighted to offer free shipping on all orders within United States.
  • Shipping Within the United States:Our services are exclusively available for customers in the United States.
  • Delivery Time:We understand that timely delivery is crucial. That’s why we aim to deliver your tires within 2 to 5 business days ( Monday – Friday, from 9 AM. to 5 PM, excluding holidays ) from the date of your order. Rest assured, we work diligently to get your tires to you as quickly as possible.
We’ve got your back from start to finish. Just remember, our cutoff timefor orders is 4 PM (GMT-06:00) Central Standard Time (Chicago) Timezone.
Get your order in by then, and we’ll kickstart the process. Our speedy handling timetakes just 1-3 days business days( Monday – Friday, from 9 AM. to 5 PM, excluding holidays ), so you’ll be hitting the road with your new tires in no time.Should you have any questions or need further assistance regarding our shipping policy, please don’t hesitate to contact our friendly customer support team. Your satisfaction is our top priority, and we are here to ensure your tire-buying experience with Tires For Less is nothing short of excellent.

Returns and Exchanges

You can return item(s) at any of our Tires For Less store or to send them to our store / warehouse. Simply bring the item(s) you’d like to return, along with your receipt and original form of payment. Returns will be handled on a case-by-case basis. Just reach out to one of our trusted experts at your local Tires For Less store, and we will work with you to make it right. Find a local Tires For Less store.If you choose to exchange a product for another, your account will be charged for the new item and credited for the return.


Eligible items may be returned and refunded to the original form of tender. If you paid by credit card, we’ll credit your account within 14 business days. This will show on your next statement, depending on the issuing bank and/or billing cycle.

RETURN POLICY ( 30 days ) :

-What is your return policy? If you’re ever not satisfied with your purchase, bring it back within 30 days and we will make it right. That is our promise.
-What if my tire is damaged or defective? Every tire we sell comes with a FREE prorated road hazard warranty, as well as a manufacturer’s limited warranty. We also offer our Certificate for Repair, Refund, or Replacement program.
-Do I need a receipt from my purchase? Your receipt or order number is the fastest way to help us locate your purchase. If you don’t have a receipt, we should be able to find the purchase in other ways but we may require additional information.
-Do you take everything back? We’ll do our best to take care of you. However from time to time, we may be unable to accommodate a return.
-Is there a time limit? What if the item has endured minor wear and tear? We will do our best to take care of our customers and deal with them fairly. There are occasions where we may not accept a return. There are no time limits for returns or exchanges.
-Are there restocking fees? Not typically, however restocking fees may apply to products we have to custom order on your behalf. If you have any questions about this, please reach out to one of our trusted experts at your local Tires For Less store.
You can be confident in our ability to make our customers happy. Ready to shop for tires and wheels?
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