ok, i got four questions guy, i've searched the search engine, and couldnt come up with much, except for the tire pressure one, but just to make sure...
1) i got 225/40/18 tires, Pirrelli P7000's... what should my tire pressure be? cuz i kno sometimes, when u put air into the tire, u put too much in, cuz u try to add enuff so the tires looks completely overly inflated, which can be very bad.. cuz one of my tires looks a bit flat from the rest...
2) coicendently, that rim that is on that tire, looks a bit bent on one small area, how much should it cost to fix a bent rim(not very bad, i kno, u guys cant tell what i mean, cuz u cant see it)?
3) what are those plastic(i think their plastic) things that are supposed to be with your 2 front wheels to help stabalize the car (like racing hart gives u two of them)... u need them really, does it help that much? and how much do they cost?

and last question, my car feels weird when im on bumpy uneven surface, or when i drive above like 65 mph... almost like the wheels are gonna fall off (not gonna happen, just saying)... is this due to the bent rim? using stock lug nuts, i didnt like the color of my tuner lugs (black), plan on buying new ones soon... or not having those two plastic things that help stabalize the car? im thinkin the bent wheels, and i need an alighnment.. and the lug nuts...?