I,ve a mixture of T1R,s and T1S,s and I have 24psi in all of them. there doesn't seem to be any hard and fast rule but I think they should be around 22/24 all round.
I have the standard 17's with F1's and put 21 in the front and 23 in the back. I find they grip better when like this and also having slightly lower pressure accounts for when the tires heat up and the pressure increases.
26 all round on 18's here, as recommended by Matt at SP when fitting my wheels. He said this is what Phil (Boss) has settled on with his so figured if it works for him then I wasn't going to argue.
