R89

Engineered to reduce overall tire weight while minimizing energy loss as the tire rotates under load, helping maintain efficient performance under varying driving conditions. This optimized construction lowers rolling resistance, supports improved fuel efficiency, and helps reduce heat buildup while maintaining durability throughout the tire’s service life.

Rubber-infused belt cords help protect internal steel components from moisture intrusion and corrosion, supporting long-term structural integrity under demanding operating conditions. This protective construction enhances overall durability, extends casing life, and improves retreadability for greater service value throughout the tire’s lifespan.

Designed to evenly distribute contact pressure across the tread surface, helping maintain a stable footprint under varying loads and driving conditions. This balanced pressure distribution encourages consistent wear patterns, reduces irregular abrasion, and supports improved mileage while preserving reliable handling throughout the tire’s service life.

The innovative three-belt package increases tread-area stiffness to control footprint shape under turning forces while reducing stress concentrations within the casing structure and improving puncture resistance. All Pirelli TBR wide-base tires build on this foundation with a fourth belt package that further stabilizes the footprint under high loads, promoting even wear and improved retreadability.

Reinforced bead construction paired with optimized rectangular steel wire geometry improves flexibility while ensuring secure, consistent bead seating throughout the casing life cycle. This design enhances durability under heavy loads, supports stable load transfer at the rim interface, and improves resistance to bead-area fatigue under demanding service conditions.

Larger-diameter spiral steel cables strengthen the belt package to better withstand heat, heavy loads, and repeated stress across on- and off-road applications. This design improves durability, helps resist structural fatigue, and supports longer tire mileage by maintaining casing durability and tread stability in varying service conditions.

The hexagonal bead wire geometry distributes pressure evenly along the wheel circumference, helping the bead hold the rim more securely and transfer torque more efficiently under load. This controlled load distribution reduces slippage, enhances bead-area durability, and helps preserve casing condition to support multiple retread cycles.

Prometeon’s patented high-silica dual-layer tread compound enhances wet grip while limiting internal friction within the tread to reduce heat buildup under heavy loads and sustained speeds. Controlled heat generation improves rolling efficiency and compound durability, while maintaining flexibility in colder temperatures for consistent traction across varying road conditions.

The innovative PRO Grip Environment compound, uniquely developed by Prometeon, is engineered to improve tire efficiency while maintaining dependable traction across varying service conditions. By reducing energy loss within the tread, this advanced formulation lowers rolling resistance, supports consistent performance, and helps reduce environmental impact through improved fuel efficiency and lower emissions.

Built on more than 100 years of tire research and investment, this casing is designed and developed from the ground up to meet strict Tier 1 standards, combining premium material compounds with a full-width casing structure engineered by Prometeon.