The Accelera PHI is a 400 TRW ultra-high performance (UHP) street tire that can also perform at the highest level on the track. The PHI was made to give you high-performance control and handling while reducing noise. At a higher treadwear than the 651 Sport, you get the best of both worlds: sacrificing grip, to get longer tire life and heightened performance.

Need more convincing? The PHI:

1. Is equipped with medium lateral grooves which make this tire great in all conditions
2. Is made with a strong yet flexible shoulder block to increase control and handling
3. Allows lower HP cars to hang with the ‘big boys’