These were the Enliten R01 updated Audi version
The original Potenza Sport were not suitable for track days as they disintegrated with heat. Bridgestone claimed to have addressed this and increased longevity with Enliten technology. However, I can confirm they have not. The tyres cracked and chunked badly after 4 15 minute sessions with 30 mins cool down in between. (Still) don't use them on track! On the road they are fine.

