Falken Azenis FK510 255/40ZR20 101Y XL Summer Ultra High Performance28036572 255 40 20 2554020 Falken Azenis FK510255 40 20 The Falken Azenis FK510 is a high performance summer tire manufactured for performance and passenger vehicles. The tire promotes excellent summer weather traction thanks to its siping detail and the 4D Nano Design tread compound that increases the compound flexibility. The switchback sipes improve the wet weather road gripping ability, while the variable sipe depth ensures dry weather