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I saw a definite 2 MPG increase by increasing the tire pressure to 44 psi on both a '97 2.5 liter Subaru and a '96 2.2 liter Subaru, both are 5 spds. I still got more than 70k out of the tires, so I saw no adverse wear characteristics. Hope this helps.
Last edited by BArmstrong; 01-15-2010 at 01:00 AM..
Reason: whoops
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