Tire Pressure versus Miles per Gallon ??

[DOCTORBILL]

I am running my tires at 32 PSI and getting 47 mpg out of my '93 Geo Metro 5 speed.

If I raised the pressure to say, 36 PSI, would I get much better mpg's?

DoctorBill

[geojim]

I don't think so. 32 is always what I have used in every car since day one.

[geozukigti]

I always run the tire pressure listed on the side of the tire, which is usually 44psi(but not always). It will help tire wear, prevent sidewall cracks, less rolling resistance, and less humming on the highway. Oh, and less wobbling at high speed. Better mpg too.

[doug7x]

Originally Posted by DOCTORBILL

I am running my tires at 32 PSI and getting 47 mpg out of my '93 Geo Metro 5 speed.

If I raised the pressure to say, 36 PSI, would I get much better mpg's?

DoctorBill

Mine are rated for 36 PSI, & I run them at 40 PSI with no problem. More PSI (up to a point) = cooler tires & better gas mileage, but if you have to deal with snow & ice, run the recommended pressure in the winter.