[targa88]

You should start with stock which is 29-36(F-R). However depending on your driving and the temperature outside; your car set up, etc. On colder days, like our last DEW (I am using Bridgestone SO-3 PP - with 6s & 7s) the tire pressure was 32 Front 34 Rear and worked very well.
Try it out and adjust after each run.Good luck. Drive safely.