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Old 09-25-2014, 07:03 PM   #16 (permalink)
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Originally Posted by FordFiestaS View Post
I obviously want high MPG 's. I want to pump up my tires a bit but not ruin them. What is considered a safe PSI increase without making the tires bald in the center as a result and not setting off the tire pressure monitoring system.

Factory specs: 32 PSI
On my 2011 Fiesta I ran sidewall max, 44 PSI, on the original tires (Kuhmo Solus) that came on the car new. At just over 30k miles, when I sold the car, the tires looked to me that they would easily do another 30k and there was no sign of any uneven tire wear. Thats 27k miles with no problem whatsoever.

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