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Help Please!

1540 Views 13 Replies 13 Participants Last post by  Gig4Fun
Ok HERES THE DEAL just got my car about a week ago....had about 63 miles when i got it, and now has about 480. Ok my mpg is 12.1. Im finding most of the GT owners around here getting at least 14 mpg. I was thinking it was my tires. I checked and their psi was about 30-32....:?: SO i went to my local gas station and pumped them up to about 40 infront and 39 in back. Is this good..or should i lower the psi alittle? Could that of been my MPG issue???? thankyou!!:wavey
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Running 40 in the fronts shouldnt wear the center out. You would need more psi than that to make a difference. I have run 40 front 35 rear for the last 250,000 miles on my tbird and all 8 sets of tires including snow tires wore even all the way across.

I think someone else hit the nail on the head about what it says in the owners manual about the milage during break in period.
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