out on track in the e36 m3 on 16th and 29th april at oulton park
i got a set of half worn r888's 235/40x17 rears and 205/40x17 fronts.

what sort of tyre pressures should i be looking to run if its a decent dry day and im pushing fairly hard?

quite new to the trackday scene and first time out on r888's...............
if its damp i also have a set of 245 rear michelin pilot sport and 225/40 conti sports fronts-same sort of question for those if its going to be damp.....

thanks for your help in advance