The AT3 line is actually made up of three unique models, each tailored to a specific type of driver:

• Discoverer AT3 4S

  Best for daily drivers and weekend warriors who face a mix of city streets, highways, and the occasional dirt road.

• Discoverer AT3 LT

  Built for light trucks and work vehicles that need durability, towing capability, and off-road readiness.

• Discoverer AT3 XLT

  Designed with aggressive styling and reinforced construction for heavier loads and more rugged terrain.

Let's take a closer look at what makes each one shine.

This tire is an ideal option for SUV and light truck owners who want a smooth, quiet highway ride without giving up all-terrain capability.

Why our customers love it:

• Whisper Grooves

  These unique tread channels reduce road noise, making for a quieter, more comfortable ride.

• Snow Groove Technology

  It's rated with the 3-Peak Mountain Snowflake, meaning it performs in severe winter conditions—not something every all-terrain tire can brag about.

• Aqua Vac Channels

  Great wet traction and hydroplaning resistance.

At Big Brand Tire & Service, we've installed the AT3 4S on thousands of vehicles across the country. The feedback? Smooth, reliable, and surprisingly quiet—without sacrificing grip when the weather turns.

This model is for the hard-working driver who hauls, tows, or hits unpaved roads regularly. Built with a reinforced internal structure and a heavy-duty tread design, the LT is engineered for durability under stress.

Big standouts:

• Durable-Tread Technology

  Helps resist chipping, shredding, and abrasions.

• Stone Ejector Ledges

  Keeps gravel and debris from lodging in the tread, improving longevity.

• 45-Day Test Drive Guarantee from Cooper

  Yep, they believe in it that much.

For our commercial customers and work truck drivers, this tire holds up under pressure—literally. Whether it's loaded trailers or rough job sites, the LT gets it done.

If you want something that looks tough and acts tougher, the XLT is for you. It has the same durable-tread tech as the LT, but with added features to handle extreme off-road conditions—and turn heads doing it.

Key perks:

• Rugged Shoulder Design

  Enhances traction in sand, mud, and loose dirt.

• Thicker Sidewalls

  Helps prevent punctures and improve load-carrying capacity.

• Aesthetic Appeal

  This tire just looks good—bolder sidewall design and more aggressive stance.

It's a favorite among our off-road crowd and weekend adventurers who like to push limits without worrying about tire failure. It also holds up beautifully when towing boats, campers, or heavy loads over uneven terrain.

We've seen firsthand how the AT3 line performs across different regions—from the rocky desert terrain in the Southwest to snowy mountain roads in the North. Here's how it stacks up based on what matters most to our customers:

We always like to share what our customers are saying in their own words:

The Cooper Discoverer AT3 series offers the ideal blend of comfort, capability, and confidence—backed by a solid warranty and a trusted name. Whether you're after a smooth ride for your SUV or beast-mode traction for your lifted truck, there's a Discoverer AT3 with your name on it.

And if you're not quite sure which one is the right fit? That's where we come in.

At Big Brand Tire & Service, we don't just sell tires—we match you with the perfect fit for your vehicle, your lifestyle, and your budget. Our friendly techs can help you weigh the pros and cons of each AT3 model and even show you how it stacks up against similar all-terrain options.

Need same-day installation? We've got you. Need financing options? We've got those too. Just stop in, call, or book your appointment online.