They are a track - road course - not drag strip tire. Tires like that need heat built up in them before their adhesion kicks in; usually a lap or two around the track. Ambient air temp will also have a huge impact; they will like warm weather and will be slick in anything cool (sub 60) until heat is built up. I'd start pressure at 32 and when it's risen to about 36 is when they should start getting in its sweet zone on the street.Greatly appreciate the write up! For sure will be more cautious in the rain. So it seems these tires are supposed to hook pretty good. Yet they dont!! Do I have to heat them up still, being that they are a street AND track tires? And does 34 sound like a good psi to stay around or am I wrong?