T-T - thanks for the info - I'll get the pressures raised.
I haven't tried the Pilot Sport Cups yet - they're the semis and will be purely for track use, but by all accounts they should last 12-18 months at our local circuit if tracking every 6 weeks. Feedback from everyone else is good - we shall see....
You obviously haven't been to Dubai though! I haven't seen any rain since January - I definitely won't be putting them on the car to drive to the track if it does rain (December-January are our 'wet' months!) as the local driving style is erratic, to say the least!