The Achilles ATR-K Sport is a street-legal track racing tire manufactured specifically for competitive motorsport applications while maintaining DOT certification for limited road use. This tire represents Achilles Radial's commitment to providing accessible track performance for budget-conscious competitors, incorporating racing tire technologies at significantly reduced price points compared to premium alternatives. The ATR-K Sport features an extremely low UTQG rating of 140, reflecting its ultra-soft compound formulation prioritizing grip over longevity. The tire incorporates a special rim guard designed to protect wheels from accidental curb and impact damage during aggressive track driving, while maximized footprint and tread area maintain road contact at all times to improve both dry and wet weather traction while minimizing energy loss during hard cornering, braking, and acceleration.
The Achilles ATR-K Sport utilizes zigzag lateral grooves combined with two center circumferential grooves that prevent hydroplaning and increase wet weather traction, while the tread design maximizes surface area for greater heat dissipation during extended track usage. The tire is available in two performance variants: Max Performance offering exceptional grip for both dry and wet conditions with lower tread life, and Ultra High Performance (UHP) providing aggressive appearance and performance with extended tread life compared to the Max variant. Available in sizes ranging from 14 to 18-inch rim diameters with various aspect ratios, the ATR-K Sport targets grassroots racers, track day enthusiasts, and drift competitors seeking maximum performance at accessible price points. The tire delivers competitive grip levels for regional racing, time attack events, and drift competition while accepting significant trade-offs in tread life due to the ultra-soft 140 UTQG compound. While technically DOT-approved for street use, the ATR-K Sport is optimized primarily for track applications where its extreme performance characteristics justify the accelerated wear rates and specialized operating requirements.
