Initially, the same tires were on the car when I bought it and they were already worn, I then put another 16000 miles on them, South France Paul Ricard circuit, Italy Monza and a few circuits here in the UK. I found the tire to have great side walls and gave me the confidence to see where the cornering limit was, it was at 145mph round the slight bend at Thruxton just before the chicane at the end of the lap, very exciting.
The replacement was down to all those trips and track days I did, Castle Combe and also Porsche Centre at Silverstone. In conclusion I recently replaced them like for like because of the prior experience, my local tire guy quoted me £997 for all 4 fitted, he knew what he did there so for obvious reasons I accepted. That might sound like a lot to some, but Porsche wanted £235 per front and a whopping £386 per rear for the same tire! I know there's a lot of noise about the PS4S's but I had them on my 987 Cayman S previously and I found the limit sooner down to the side walls not to be as sturdy, I know its a different car with different characteristics but you'd think it being mid engined it would've handled better than the worn tires they replaced, I wont mention what they were only that they were better, at the time there was all the hype about PS4S's and I fell for it and was disappointed. I'll stick with my PS2's, they are also great in the wet, never stepped out of line but then again with all the weight at the back I wasn't willing to find the limit in the wet, but I was happily surprised when I did corner aggressively in the wet and the tires were fine.