Well i have pirelli p4000's and they are set 35/35 at the moment. they put them that way to set the bead when i bought them. and havent had time to set them to where i want. i usualy run stock 32/28 i think. what ever the door plate says. and all i do is highway miles seems like no racing so its nice
I usually run 38 front/34 rear. I'm running 215/40zr16's. Now if you're roadracing you need to start with an even lower air pressure because as your tread heats up it builds air pressure in the tire, I've seen increases as much as 8 psi! Running around with tires that have 45+ psi is scary! Usually when roadracing, everytime I pit between sessions, I check air pressure and readjust it.
I run about 38-f and 34-r on my 205/40/17s.
feels good, is good
98 se-r w/ p/r cai, stillen header, courtesy exhaust, JUN flywheel, ACT clutch, NOS nitrous kit, eibach springs, kyb struts, st sways, cusco camber plates, f/r strut braces, lotsa bushings, and a bunch of other crap not really worth mentioning
That should be safe. Be ware tho when you have the rears set high they like to spin.
One day I had my avs's set at 40 in the rear because I forgot to let the air out from my runs at the strip the night before and while brining someone for a joy ride on an off ramp I spun big time. Me and the kid thought we were going to die !MAN WAS IT FUN! I was also doing 70 and it was a off camber turn..the kind you read about in storys like this
Anyway keep the rear away from 40psi(except on the autox course
) Just a reminder this frekin cold weather make tires like to lose grip too... I'll write about that one later.
Also remember, that are cars are fairly light, so 38 psi is plenty. When you start getting into heavier cars, or heavier loads, that's when you need to run 45+ psi. If you run mid to high 40's on our cars, they're going to feel really loose and a loss of traction as well. The reason for this is that there is so much air in the tire that you kind of become high-centered. Which means less of a contact patch.