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Old 06-18-2009, 07:39 PM   #17 (permalink)
Speedboy turned MPGman
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Join Date: Jun 2009
Location: Arizona
Posts: 24

Platinum Bullet - '04 Subaru Impreza WRX
90 day: 27.53 mpg (US)
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Originally Posted by nemesis View Post
I've see too many tire blow outs, premature tire wear, rougher ride and suspension problems with over inflated tires. I don't know about you, but 1mpg extra is not worth all that hassle to me personally.
You might be right about that. Personally, my tires' "max" tire pressure is only 40 psi, which is only about 5-6 psi over the recommended pressure. I don't know how much additional MPG that gets me, but I do seem to be able to coast longer than before. And I don't think I'll have too many of the problems you described. I can't imagine running 50+ psi like some folks do, but I think the game here is the combined effects of many small modifications that can add up to a significant difference.
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