
Cooper Discoverer AT3 4S
3PMSOut of stock
1 sizes · 0 in stock
Cooper is a well-established tire brand with deep roots in all terrain, truck and off road categories, backed by decades of North American engineering experience and now part of the Goodyear family.

Out of stock
1 sizes · 0 in stock
Cooper is a well-established tire brand with deep roots in all terrain, truck and off road categories, backed by decades of North American engineering experience and now part of the Goodyear family. We organize Cooper tires by use case so shoppers can connect the right model family to their vehicle, season and route.
Cooper tires have built a loyal following among Canadian truck owners, off road drivers and value focused commuters. The brand covers performance, touring, all terrain, winter and commercial categories with consistent tread durability, strong winter capability and pricing that reliably undercuts the top tier European brands without sacrificing meaningful real world performance.
Canadian fitment tip: Cooper's strength is in all terrain, SUV and truck categories where many models carry the 3 Peak Mountain Snowflake rating for genuine winter use. If you drive a pickup, crossover or SUV in Ontario or Quebec, confirm whether the model is 3PMSF rated before treating it as a year round or winter capable tire.
Cooper's engineering investments are concentrated in the areas where drivers most notice the difference: tread durability, winter grip, sidewall toughness and wet safety. Understanding which technology a Cooper tire carries helps match the right model to the right use case.
Armor Tek3® Construction Found in Discoverer all terrain and mud terrain models. Three layers of cut resistant material protect the sidewall against punctures, rocks and trail debris — a key differentiator for serious off road use in Canadian conditions where sharp gravel, washboard logging roads and backcountry trails are common.
Snow Groove™ Technology Used across winter and winter capable all terrain models including the Discoverer True North, Evolution Winter and Snow Claw. Tread grooves are designed to trap and compact snow, creating snow on snow friction — one of the most effective mechanisms for grip on packed Ontario and Quebec winter roads.
3D Micro-Gauge™ Siping Found on performance models like the Cobra Instinct and Zeon RS3-G1. Interlocking three dimensional sipes grip wet and slippery surfaces more effectively than conventional straight cut siping, improving wet braking and stability.
Even Wear Arc™ Geometry Used in the ProControl and related touring tires. The tread contact patch is engineered to distribute pressure evenly across the full width of the tire, reducing shoulder wear and extending usable tread life — directly supporting the 100,000–110,000 km warranties Cooper offers on touring models.
Wear Square® Indicator Built into Cooper touring and SUV tires. Unlike standard tread wear bars that only appear when a tire is nearly worn, the Wear Square visually changes shape as the tread wears down, giving drivers an earlier and clearer signal that replacement is approaching.
Soybean Oil Compound Used in the Cobra Instinct performance tire. Soybean oil helps keep the tread compound pliable in cold temperatures — a meaningful benefit for Canadian drivers who face sub zero temperatures in Ontario and Quebec winters, even when running an all season tire.
Cooper availability changes with seasonal demand and supplier stock, so the model links below are useful entry points as well as shopper shortcuts.
Start with the model families that match your vehicle category and driving season, then narrow live results by exact tire size, season, vehicle type, XL, run flat, studdable, EV compatible options and current stock.
| Model family | Category & why shoppers compare it |
|---|---|
| Cobra Instinct | UHP all season for sports cars, performance sedans and muscle cars. Asymmetric tread, soybean oil compound for cold weather pliability, 70,000 km warranty — Cooper's answer to the Continental ExtremeContact DWS 06 Plus and Michelin Pilot Sport A/S 4 at a lower price. |
| Zeon RS3-G1 | The UHP all season that established Cooper's performance credibility. 3D Micro-Gauge™ siping, silica compound, strong dry grip and wet traction. Still available in many sizes with a 70,000 km warranty — a proven value pick in the UHP all season segment. |
| ProControl | Cooper's flagship grand touring all season. Even Wear Arc™ geometry, Armor Belt™ stiffness, hydroplane resisting grooves, sipes that widen as the tire wears. Up to 110,000 km warranty. Competes directly with Goodyear Assurance and Continental TrueContact Tour. |
| Endeavor Plus | All season touring tire tuned for crossovers, SUVs and light pickups. Silica compound, checkmark water channels, Wear Square® indicator. 100,000 km warranty. Strong everyday value versus Bridgestone and Firestone mainline touring tires. |
| CS5 Touring | Long running passenger car and minivan touring tire. StabilEdge™ cornering stability, silica compound, plush ride. 100,000–110,000 km warranty. A reliable choice for road trip drivers and high mileage Ontario and Quebec commuters. |
| Discoverer Road+Trail AT | All terrain for SUVs, crossovers and light pickups. 3PMSF rated, 100,000 km warranty, EnduraGuard™ construction, Road Glide™ Technology for a quieter on road ride. A more road comfortable A/T alternative to the Continental TerrainContact A/T. |
| Discoverer Stronghold AT | Heavy duty all terrain for 3/4 ton and 1 ton pickups, large SUVs and work trucks. 3PMSF rated, stone ejector ledges, shoulder siping, crack and chunk resistant compound. Built for towing, hauling and harsh surfaces — competes with BFGoodrich KO2 and Goodyear Wrangler Duratrac. |
| Discoverer Rugged Trek | Hybrid all terrain / mud terrain for trucks and SUVs that want aggressive looks and serious off road traction with daily drivability. Armor Tek3® construction, dual sidewall designs, 3PMSF rated. Competes with the Nitto Ridge Grappler and Falken Wildpeak A/T3W. |
| Discoverer STT Pro | Maximum traction mud terrain for hardcore off roading: mud, rocks, deep snow and severe terrain. Rock Climber Sidewall™, Stone Armor™ protection, Mud Slinger™ 2.0 channels, Armor Tek3® casing. Competes with BFGoodrich KM3 at a typically lower price. |
| Discoverer True North | Cooper's flagship studless ice and snow tire for passenger cars, crossovers and SUVs. Silica rich winter compound, directional tread, Snow Groove™ Technology for snow on snow traction. Strong competitor to Michelin X-Ice Snow and Bridgestone Blizzak WS90 at a lower price. |
| Evolution Winter | Studdable winter tire for compact cars, sedans and crossovers. Dense siping, deep snow lugs, Snow Groove™ Technology, flexible winter compound. Can be studded for severe ice — competes with General AltiMax Arctic 12 and Firestone Winterforce 2. |
| Discoverer HT3 | Highway all season commercial grade tire for commercial pickups, vans and full size SUVs. Precise steering, stability under load, 80,000 km warranty. Competes with Michelin Agilis and Goodyear Wrangler highway tires, usually at a lower upfront cost. |
| Need | What to look for | Best model direction |
|---|---|---|
| UHP performance, all season | Wet and dry grip, cold weather compound, tread life warranty. | Cobra Instinct / Zeon RS3-G1 |
| Daily commuting / grand touring | Long tread life, even wear, fuel efficiency, wet braking, warranty. | ProControl / CS5 Touring |
| SUV and crossover touring | Load capacity, quiet ride, all season traction, mileage coverage. | Endeavor Plus / ProControl |
| Mixed highway and light trail (SUV / crossover) | 3PMSF rating, road comfort, tread life, reasonable noise on highway. | Discoverer Road+Trail AT |
| Heavy duty truck, towing and work use | Load range, casing strength, 3PMSF, cut and chip resistance. | Discoverer Stronghold AT |
| Aggressive all terrain / hybrid mud terrain | Sidewall protection, trail traction, 3PMSF, on road noise tolerance. | Discoverer Rugged Trek |
| Maximum off road / mud terrain | Deep tread, mud clearance, rock durability, puncture resistance. | Discoverer STT Pro |
| Ontario & Quebec winter driving (car / SUV) | Ice traction, sub zero compound flexibility, snow on snow grip. | Discoverer True North / Evolution Winter |
| Commercial vans and fleet pickups | Load rating, stability, long tread life, cost per kilometre. | Discoverer HT3 |
XYZTires.com ships Cooper tires across Ontario and Quebec, including Toronto, Mississauga, Brampton, Vaughan, Markham, Richmond Hill, Hamilton, London, Kitchener-Waterloo, Windsor, Ottawa, Montreal, Laval, Longueuil, Quebec City, Gatineau and Sherbrooke. Whether you're ordering Discoverer all terrain tires before cottage season, winter tires ahead of the first Ontario snowfall, or commercial tires for a Quebec fleet, the goal is simple: make brand research useful and give shoppers a direct path from model comparison to live tire inventory.
Use the shop filters to narrow Cooper tires by size, season, brand, vehicle type, run flat, XL, studdable, EV compatible and more. View current Cooper tire inventory or search all tires by size.
Cooper can be an excellent choice when the model is matched to the vehicle, season and route. The brand is particularly strong in all terrain, SUV, truck and winter categories, and consistently delivers real world tread life and winter capability at a price that undercuts most European and Japanese premium brands. For Ontario and Quebec shoppers, the key is confirming season rating, the 3 Peak Mountain Snowflake symbol where relevant, and the correct load and speed rating for the vehicle.
The Discoverer True North is Cooper's top studless ice and snow tire for passenger cars, crossovers and SUVs. Its silica rich winter compound and Snow Groove™ Technology deliver strong ice traction and snow on snow grip — the mechanisms that matter most on the packed snow and wet ice common in Southern Ontario and Quebec. For drivers who want a studdable option or face more severe conditions, the Evolution Winter (passenger and crossover) and Discoverer Snow Claw (trucks and SUVs) add the option to stud for maximum ice grip. Note that Quebec law requires winter tires from December 1 to March 15, so plan tire changes accordingly.
The Road+Trail AT is designed for SUVs, crossovers and light pickups that split time between highway and moderate trail use. It prioritizes on road comfort, low noise and a 100,000 km treadwear warranty, while still carrying the 3PMSF rating for winter capability. The Stronghold AT is built for heavier duty applications — 3/4 ton and 1 ton trucks, large SUVs and work vehicles that tow, haul or operate on harsher surfaces. If your vehicle is a daily SUV or crossover, start with the Road+Trail AT. If it is a full size workhorse pickup, the Stronghold AT is the more appropriate fitment.
Use our tire fitment tool on the homepage or any shop page. Alternatively, read the size printed on the current tire sidewall (for example, 265/70R17) or check the vehicle door placard, then search XYZTires.com by width, profile and diameter. After finding matching Cooper results, confirm the load index, speed rating, and XL or LT requirement before ordering.
XYZTires.com offers fast free shipping across Ontario and Quebec on tire orders. Inventory changes throughout the day with seasonal demand, so the brand and size filters are the best way to confirm current Cooper availability and pricing.
Choose all season tires (ProControl, CS5 Touring) for mild three season driving without consistent winter exposure. Choose all weather tires for year round convenience with genuine winter capability — look for the 3PMSF symbol. Choose dedicated winter tires — Discoverer True North or Evolution Winter — for the strongest cold weather stopping distances and ice control, especially in Quebec where winter tires are legally required from December 1. Choose all terrain tires (Discoverer Road+Trail AT, Stronghold AT) when truck or SUV traction on mixed road and trail surfaces is the priority, especially when the model carries 3PMSF certification.
| Parent company | The Goodyear Tire & Rubber Company |
|---|---|
| Headquarters | United States |
| Models we carry | 1 |
| Official website | us.coopertire.com |
Shipped to your door or installer in 1–3 business days; next day in most of the GTA.
321 Rexdale Blvd, Etobicoke. Monday to Friday, 9 a.m. to 5 p.m.
Unused tires with original stickers can be returned within 30 days.
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