Cooper Discoverer AT3 vs Toyo Open Country AT3 [Test Data]
| Discoverer AT3 4S | Open Country A/T III | |
|---|---|---|
| Vehicle Suitability | Light Truck / SUV | Light Truck / SUV |
| Driving Style | On-/Off-Road All-Terrain | On-/Off-Road All-Terrain |
| Season | All Season | All Season |
| Release Date | 2018 | 2020 |
| Run Flat? | No | No |
| Overall Score | 87/100 | 86/100 |
Comparison Summary
No time to read the full article? Here's what you need to know:
- Both tyres have similar dry traction capabilities.
- Discoverer AT3 4S has better tread life than Open Country A/T III.
- Both tyres have similar temperature resistance.
Pricing
Enter your tyre size below to see the best prices for your specific size (if unsure, check placard on the driver's side door or your existing tyres).
Cooper Discoverer AT3 4S vs Toyo Open Country A/T III in Australia
The Discoverer AT3 4S has been around in Australia for about 6 years, whereas the Open Country A/T III has been on the market for about 4 years
Both tyres are rated for on-/off-road all-terrain action. Both tyres are designed for use with 4WDs, SUVs and light trucks.
Both of these are considered all season tyres. Neither of them are runflat tyres. Both brands are considered to be in the mid-range part of the market.
Read on to see how each of these tyres stack up against each other!
How We Reviewed These Tyres
We've analysed results of the following tyre benchmarks to make data-driven comparison of the Discoverer AT3 4S and the Open Country A/T III tyres.
- The Best All-Terrain Tires for North America in 2024 by TiresVote
- TireRack: Best in On-Road All-Terrain
- Consumer Reports: All Terrain Truck Tires
- Amazon: Best Sellers in All-Terrain & Mud-Terrain Tires
- TireRack: Best in Off-Road All-Terrain
- The Best All-Terrain Tires for North America in 2024 by TiresVote
- Tyre Reviews: All-Terrain Tire Test R18
- Consumer Reports: All Terrain Truck Tires
Benchmark Test Data
| Discoverer AT3 4S | Open Country A/T III | |
|---|---|---|
| Handling | Excellent | Excellent |
| Price/Quality | Excellent | Excellent |
| Dry Performance | Excellent | Excellent |
| Wet Performance | Excellent | Excellent |
| Comfort | Excellent | Excellent |
| Snow/Ice Performance | Excellent | Excellent |
| Treadwear | Good | N/A |
| Overall Score | 87/100 | 86/100 |
Comfort
Based on the results of a number of tyre benchmarks, the Discoverer AT3 4S scores 5 out of 5 for comfort and the Open Country A/T III scores 5 out of 5.
UTQG Data
Introduced by the National Highway Traffic Safety Administration (NHTSA) in the USA, the Uniform Tire Grading System (UTQG), is a system for comparing one tyre product to another on the basis of some standardised tests.
| Discoverer AT3 4S | Open Country A/T III | |
|---|---|---|
| Treadwear | 620 | 600 |
| Traction (AA - C) | A | A |
| Temperature Resistance (A - C) | B | B |
Treadwear
As per the UTQG guidelines, the Discoverer AT3 4S tyres have a treadwear rating of 620, whereas the Open Country A/T III tyres have a rating of 600. This means that the Discoverer AT3 4S tyres will theoretically last 1.0 times as long as the Open Country A/T III tyres.
Traction
The UTQG system measures traction as straight-line braking in dry conditions. The scale is AA, A, B, C, with AA being the best grade, and C the worst.
As per the, the Discoverer AT3 4S and Open Country A/T III tyres both have a traction grading of A.
Temperature Resistance
The UTQG temperature resistance tests measure how well tyres can dissipate heat that builds up due to friction with the road. The scale is A, B, C, with A being the highest grade.
As per the UTQG system of tyre grading, the Discoverer AT3 4S and Open Country A/T III tyres both have a temperature resistance grading of B.
Warranty
In terms of distance, the Discoverer AT3 4S tyres have a warranty of 80,000 kilometres. There is no distance based warranty available for the Open Country A/T III.
Comparisons With Similar Tyres
Still on the fence about these tyres? Check out how they compare to other similar tyres on the market in Australia!
- Cooper Discoverer AT3 4S vs AT3 LT
- Cooper Discoverer AT3 4S vs Falken Wildpeak A/T3W
- Cooper Discoverer AT3 vs BFGoodrich All Terrain T/A KO2
- Cooper Discoverer AT3 vs Yokohama Geolandar A/T G015
- Cooper Discoverer AT3 XLT vs Toyo Open Country AT3
- Falken Wildpeak A/T3W vs Toyo Open Country AT3
Summary
Let's now take a look at the main differences between these two sets of tyres.
All in all, the Discoverer AT3 4S tyres get a score of 87 out of 100, while the Open Country A/T III tyres get a score of 86 out of 100.
The Discoverer AT3 4S tyres have a UTQG treadwear rating of 620, whereas the Open Country A/T III tyres have a rating of 600.This means that you can expect the Discoverer AT3 4S to last 1.0 times as long as the Open Country A/T III tyres.
The Discoverer AT3 4S have a UTQG traction grading of A, while the Open Country A/T III tyres having a grading of A.
The Discoverer AT3 4S have a UTQG temperature grading of B, while the Open Country A/T III tyres having a grading of B.
Full Size List (click to show)
Below is a list of all 42 sizes of the Discoverer AT3 4S, and all 96 sizes of the Open Country A/T III tyres sold in Australia, sorted by tyre width.
Discoverer AT3 4S Sizes
| Size |
|---|
| 215/70 R16 100T |
| 215/65 R17 99T |
| 225/70 R15 100T |
| 225/75 R16 104T |
| 225/70 R16 103T |
| 225/65 R17 102H |
| 235/75 R15 109T XL |
| 235/70 R17 109T XL |
| 235/75 R15 105T |
| 235/60 R17 102T |
| 235/65 R17 108T XL |
| 235/75 R16 108T |
| 235/70 R16 106T |
| 235/75 R17 109T |
| 245/65 R17 111T XL |
| 245/75 R16 111T |
| 245/70 R16 111T XL |
| 245/70 R16 107T |
| 245/70 R17 110T |
| 255/70 R18 113T |
| 255/50 R20 109H XL |
| 255/75 R17 115T |
| 255/65 R17 110T |
| 255/70 R17 112T |
| 255/70 R16 111T |
| 255/70 R15 108T |
| 265/70 R15 112T |
| 265/65 R17 112T |
| 265/70 R16 112T |
| 265/50 R20 111T XL |
| 265/75 R15 112T |
| 265/70 R18 116T |
| 265/75 R16 116T |
| 265/60 R18 110T |
| 265/65 R18 114T |
| 265/70 R17 115T |
| 275/65 R18 116T |
| 275/45 R22 112H XL |
| 275/60 R20 115T |
| 275/55 R20 117T XL |
| 285/70 R17 117T |
| 285/45 R22 114H XL |
Open Country A/T III Sizes
| Size |
|---|
| 215/70 R16 100T |
| 215/75 R15 100T |
| 215/65 R16 102T XL |
| 215/85 R16 115/112Q |
| 215/65 R17 103T XL |
| 225/70 R16 103T |
| 225/75 R16 115/112Q |
| 225/55 R18 102H XL |
| 225/60 R17 103T XL |
| 225/65 R17 102T |
| 225/75 R15 102T |
| 225/75 R16 104S |
| 225/60 R18 104T XL |
| 235/80 R17 120/117R |
| 235/75 R15 104/101S |
| 235/65 R18 110T XL |
| 235/60 R18 107T XL |
| 235/65 R17 108H XL |
| 235/75 R15 108T XL |
| 235/75 R17 108S |
| 235/70 R16 106T |
| 235/85 R16 120/116R |
| 245/60 R20 107T |
| 245/70 R16 106S |
| 245/70 R17 110T |
| 245/75 R17 121/118S |
| 245/70 R17 119/116R |
| 245/75 R16 111T |
| 245/50 R20 105H XL |
| 245/75 R16 120/116S |
| 245/65 R17 111T XL |
| 245/60 R18 109T XL |
| 255/70 R17 112T |
| 255/60 R19 113H XL |
| 255/55 R20 110H XL |
| 255/70 R16 115T XL |
| 255/65 R16 109T |
| 255/50 R20 109T XL |
| 255/55 R18 109H XL |
| 255/80 R17 121/118R |
| 255/70 R18 113T |
| 255/55 R19 111H XL |
| 265/65 R18 114T |
| 265/70 R16 111T |
| 265/75 R16 123/120R |
| 265/65 R17 116T XL |
| 265/60 R18 110T |
| 265/60 R20 121/118S |
| 265/75 R16 116T |
| 265/75 R15 112S |
| 265/70 R17 115T |
| 265/70 R18 124/121Q |
| 265/70 R17 121/118S |
| 265/70 R18 116T |
| 265/50 R20 111T XL |
| 275/55 R20 117T XL |
| 275/65 R20 126/123S |
| 275/65 R18 123/120S |
| 275/65 R18 116T |
| 275/65 R18 113/110T |
| 275/60 R20 115T |
| 275/70 R18 125/122S |
| 285/75 R17 117/114Q |
| 285/55 R22 124/121S |
| 285/75 R16 126/123R |
| 285/55 R20 122/119T |
| 285/65 R18 125/122S |
| 285/70 R17 116/113Q |
| 285/60 R20 125/122R |
| 285/50 R22 121/118R |
| 285/75 R18 129/126S |
| 285/55 R20 114T |
| 285/70 R17 117T |
| 285/75 R17 121/118S |
| 285/45 R22 114H XL |
| 285/60 R18 120S XL |
| 285/70 R17 121/118S |
| 295/55 R20 123/120T |
| 295/50 R22 122/119T |
| 295/55 R22 125/122T |
| 295/60 R20 126/123S |
| 295/65 R20 129/126S |
| 295/70 R18 129/126S |
| 295/75 R16 128/125R |
| 305/70 R16 124/121R |
| 305/50 R20 120T XL |
| 305/45 R22 118S XL |
| 305/55 R20 125/122Q |
| 305/65 R18 128/125Q |
| 305/70 R17 121/118R |
| 315/75 R16 127/124R |
| 315/70 R17 121/118S |
| 325/65 R18 127/124R |
| 325/50 R22 127Q |
| 325/60 R18 124/121S |
| 325/60 R20 126/123R |
Louis
I'm Louis, an engineer passionate about helping Australians choose better tyres for their vehicles!