Tire Pressure Cost me! - Toyota Yaris Forums - Ultimate Yaris Enthusiast Site

03-20-2010, 12:44 PM

#19

silver_vios

Banned

Drives: yaris sedan

Join Date: Mar 2010

Location: california

Posts: 23

Quote:

Originally Posted by sbergman27

The general rule of thumb, based upon Goodyear's testing, is about 0.3% decreased fuel economy for every 1 psi *below* the number recommended by the auto manufacturer.

So if I run at 1 PSI I'll still get over 29 mpg? You can't use a straight line for an exponential curve.

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