I decided that after much reading to go with kumho ecsta ku31's for my road wheels. I have used then a good amount of miles now and gave them a bash on track at castle Combe. Mighty impressed even after coming from ps2's. I started reading on the m3 forums and this seemed to be what they guys used in the same sizes. Bought from camskill for 530 ish. Couldn't afford to keep putting ps2's on as I only get a few thousand out a set as I ended up using them on track as ps2's were so good. Decided to go with these to tempt me away from using them on track but thought it good to try them just to see how much abuse they could take.
Would defo recommend them as a decent budget tyre. Excellent performance in the wet, dry and cope with heat and braking well