evodarren said:
My car is 95% road use, would i really notice much differenc betreen a road based Pilot sport compared to th Pilot cups. Would like to get as many road mile out of the car and im probable not the best driver out ther so i may not notice much difference.
You will certainly notice some differences.
Firstly, you have to consider that track day tyres don't work terribly well in standing water/heavy rain or indeed the cold. Cups in particular only come with 4.5mm of tread depth from new, so obviously aren't going to last anything like as long on the road as a Pilot Sport, Bridgestone RE050, Conti SportContact or other N rated options.
The advantage of track day tyres is not just that they have higher peak grip, but also that they don't tend to start to melt on track. When you start to get fast in something like a GT3 this does become an issue - particularly if you do runs longer than about 15 minutes at a time.
The Michelin Supersport is a very good middle ground and the tyre that pretty much everyone who has tried it will recommend for the use that you describe, but it looks like those will not be made available in 997 sizes with an N rating (even though they were developed on the 997 and used by the Porsche Experience centre).