Tire Pressure ?

[TachyonS14]

Ok, this might sound like a newbie question, but I'm gonna ask anyway. What tire pressure should I be running while on the street? I know certain tires have certain pressures they are supposed to run at, but I always read about ppl lowering their tire pressure for better traction/speed. But also, doesn't lowering your tire pressure cause your tires to wear out quicker and heat up over long drives on the freeway?

My car's engine runs really strong, but It seems I'm not going as fast as I should be. Also my ride seems very rough for a stock suspension. I know my 17 inch wheels are causing a rougher ride because they have less tire, but they are a significant drop In speed and ride vs. my 15's. When I had my stock 15's with bald a$$ tires my car seemed to grab better traction and had a lot better ride quality.

So, my real concern is when I bought my tire/wheel combo, maybe they are over-inflated? I will go check my actual tire pressure read out and maybe that can help.

[NISTECH]

when you have a low profile tire you sacrafice some of your ride comfort due to the sidewalls do not give as much. your speed concern is do to it takes longer for a 17 inch tire to make one revolution the it does for your 15. when you step up your rim size you need to compensate with tire size. there is a chart which most tire shops have for getting you as close as possible to the original total tire and rim diameter so you dont suffer from speedo inaccuracy. hit a tire shop up for that info to see if you can get a different tire on those rims to help out. as far as ride goes not much you can do if you want those low pro's.

[TachyonS14]

I guess it's the price I pay to look so baller huh...