Regardless of what tires you put on, you want 30-32 pounds. Pressure should be checked when the tires are COLD. 
2004 Tire Pressures ?
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St. Jude Donor '06-'07-'08-'09-'10-'11-'12-'13
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From: Waldorf MD
I agree with running 28 psi cold. ET, an EX-GM C5 Engineer, says 30 psi hot is the "sweet spot" and 30 psi cold is just the universal (liability) value. So hot pressures rely on the time of year and geographic location.
Pro
Joined: Sep 2007
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From: Bucks County Pa
28 psi cold is the best ride
Luck to all
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