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Old 12-04-2010, 10:05 AM   #21 (permalink)
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If they are rated at 51 psi, they are probably goodyear fuelmax. We sell them at work and I believe the only difference is the pressure rating. We don't sell many.


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4.9L, Mazda 5 speed, 4.10 10.25" rear
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Old 12-05-2010, 07:31 PM   #22 (permalink)
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Originally Posted by ik04 View Post
Overinflating tires is more dangerous than it is economical. The tiny reduction in rolling resistance is not worth the reduced safety margin caused by rock hard tires. Use the high end of the recommended pressure range marked on the tire and no more or risk a big reduction in braking and cornering traction. That's my .02
I do 90 deg corners at 35mph on my cobalt at 50psi, it seems like it corners better not worse.
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Old 12-05-2010, 07:44 PM   #23 (permalink)
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I feel better about how my car drives when its 44psi.
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Old 12-05-2010, 09:09 PM   #24 (permalink)
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Tire burst is well over 100 PSI. It might be a problem if you have really, really low quality tires or if your tire is damaged. Don't worry if your tire is a few PSI over max sidewall. You are much more likely to have problems with underinflation than overinflation.

My tires are at 65 PSI, at the moment, or they were a month ago before it got cold.

And that's without a Scangauge o.O
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Old 12-06-2010, 09:24 AM   #25 (permalink)
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Good last point, Sulfuric. It's time to check your tire pressure! Even if they were a little high last month, they're likely underinflated now.


11-mile commute: 100 mpg - - - Tank: 90.2 mpg / 1191 miles
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