195/60-15 Tires, premium and MPG - Toyota Yaris Forums

08-05-2009, 08:39 AM

#18

IllusionX

It's the illusion you see

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Drives: 07 Yaris Sedan Aero

Join Date: Oct 2006

Location: Brossard, QC

Posts: 3,888

Quote:

Originally Posted by BailOut

That is incorrect. All tire pressure metrics are rated and measured when the tire is cold (<= 70F) for consistency. This is why it is always recommended that you check and adjust tire pressure first thing in the morning.

Heat expansion is calculated into the "cold" numbers.

are you sure? i freaked out when i saw 55psi on my bridgestone Re92 after a long day driving on a hot summer day..

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