Quote:
Originally Posted by Poodles
Tire pressure is out because of the TPMS system. It's more likely the winter blend gasoline.
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Even a couple PSI is noticeable in relation to fuel economy, the light isn't a gauge, just a 'check your tires dummy' light.
They could easily be down around 32 psi and for fuel economy I wouldn't be surprised if people were running the oem tires up to ~40 psi. For the record I believe recommended pressure is 35-36.