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Old 12-13-2012, 09:24 PM
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pointandgo pointandgo is offline
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Location: Los Angeles area
Join Date: Apr 2010
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Mein Auto: '13 F10 535i (loaner)
Originally Posted by sle39lvr View Post
The Basic question I want to ask is:

Should PSI be higher on NON RFT's compared to similar spec RFT's?

I got 18" staggered wheels on my e90 and I recently put on Michelin Pilot Super Sports.

User manual states I should run 36psi front/42psi back for extra load. I ran this on my old NITTO NON RFT Tires (Softer tire from what I experienced) and the fronts had shoulders wear off noting that they were under inflated.

I wonder 36/42 is for RFT's and if I should run higher for these NON RFT Michelin PSS's.
Short answer: RFs and non-RF tire pressures are guided by the same tire/load/pressure standards according to U.S. standards: The U.S. Tire and Rim Association. There is NO difference. Size-for-size, RFs and non-RFs carry the same load and have the same PSI requirements.
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