265/40ZR21 Hankook Ventus S1 Evo Z As X H129a 105(Y)Drive assured with the 265 40ZR21 Hankook Ventus S1 Evo Z As X H129a 105(Y)engineered to balance control, comfort, and durability. Developed by Hankook, the VENTUS S1 EVO Z AS X H129A blends precision engineering with a calm, composed ride. Its Blackwall sidewall adds a clean look while helping protect against bumps and scrapes from daily use. The tread pattern is tuned to maintain traction on dry pavement, manage water in the wet, and stay composed