Cooper Discoverer AT3 4S 265/70R18

Product Overview

The Cooper Discoverer AT3 4S is an all-terrain, all-season tire intended for drivers seeking a balance of on-road comfort and capability on unpaved surfaces. This listing is for size 265/70R18.

Tire Size Explained

• 265: Nominal tire width in millimeters.
• 70: Sidewall height expressed as 70% of the tire width.
• R: Radial construction.
• 18: Designed for an 18-inch wheel.

Fitment Considerations

Before purchasing, confirm that 265/70R18 is approved for the vehicle and wheel. The complete service description—including load index and speed rating—should meet or exceed the vehicle manufacturer’s requirements.

Also verify wheel width, clearance, inflation requirements, and whether the vehicle requires matching tires on all four positions. Changing from the original tire size can affect handling, ride height, speedometer readings, and clearance.

Typical Use

An all-terrain tire may suit drivers who regularly combine paved-road travel with gravel roads, dirt roads, worksites, trails, or changing weather. Tire performance depends on vehicle setup, inflation, load, road conditions, maintenance, and driving habits.

Before Installation

• Confirm the exact size, load index, and speed rating.
• Inspect the wheels and valve components.
• Use professional mounting and balancing.
• Check alignment if existing tires show uneven wear.
• Follow the vehicle manufacturer’s pressure recommendations.
• Rotate and inspect the tires at appropriate service intervals.