The AZENIS RT615K+ is derived from the original competition-winning RT615K. The PLUS encompasses an all-new digitally-engineered, nanotech-formulated compound for superior grip and excellent handling. Its confidence inspiring straight line and cornering traits allow drivers to push the limits of their vehicle in safe, closed-course environments, while its street-capable durability and DOT approval allow for street-legal daily use as well. With 13 sizes from 14 to 18-inch rim diameters and a 200 A-A UTQG rating, the AZENIS RT615K+ is the ultimate choice for performance compacts, sports coupes, sports sedans and muscle cars. Key Features: RACE-INSPIRED TREAD COMPOUND – Provides excellent traction in all racing conditions. MASSIVE SPORT SIDE SHOULDER BLOCKS – Deliver motorsports-level grip and unsurpassed cornering response. SOLID CENTER RIB – Significantly reduces wheel spin by reducing contact patch void ratio under heavy acceleration. HIGH-TENSION CARCASS – Increases handling response and high-speed stability. 4D NANO DESIGN – Features new compound advancements through biomass materials to help improve tread flexibility and adhesion while simultaneously reducing polymer heat generation.