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Old 12-16-2003, 11:20 PM   #14 (permalink)
Peryn
Junkie
 
Location: San Diego, CA.
Go with the door jam, not the tires. If you read your tires carefully, in almost all cases they tell you a MAXIMUM tire pressure...not the reccomended. Even then, most suspension/alignment shops and tire shops have found thenumbers that work best in reality...not in a lab...and they are different than the door jam. Usually the rears stay the same, or drop a litte, and the front get more air. Sometimes upwards of 4 or more psi in front. Why? Because what weight do you have on the rear? especially on a FWD car, all your weight is on the fronts. You are gonne want some extra air in there becuase that is where the engine, tranny, and everything important is. In the meantime, all the rears have is a few passengers... if that. No reason to throw a bunch of air at that. In your case, I would feel plenty safe and comfy running 36 or so in the fronts, 33, 34, or maybe even 35 (if its loaded down) in the rears. If your not comfy with adjusting it to out of specs...go with the doorjam (unless you've significantly changed tires) reading, and know that factory specs will keep you safe.

My jeep, for example, has next to no weight on the rears. Between that and the fact that my rears are P series, while the fronts are LT (and built for higher pressure), i have 40-45 on the fronts, and 30ish in the rears and it works great. If i aired down the fronts, and aired up the rears, it'd be like dragging flats in the front and bike tires in the back, and wouldn't handle right at all.
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