Yes. It was a 3 day HPDE weekend, and I ran Friday and Saturday with performance friction 1038 pads up front on the Stoptech ST-60s (i think these are the "z rated" street/track combo pad) and stock pads+calipers in the rear.
My driving and braking techniques improved very quickly over the weekend, so I found another driver at the event with a 6 Piston Stoptech kit (same size pads) who had an extra set of Hawk HT-10s. He only had a few events on the pads, so they had plenty of pad life left (maybe ~30% used?). I installed the pads at the end of Saturday at the track and drove home (1hr). The pads were kept on through Sunday night when I switched back to street pads after the drive home.
Originally Posted by xerox445
I am a little confused. Are the pictures you have posted (OP), of pads from a stoptech big brake kit on your car after a HPDE with Kumoh XS's?