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Do Your Tires Affect Gas Milage?


Three ways tires affect your car's Miles Per Gallon (MPG):

Tire inflation
Weight of your tires/rim
Tire tread


Let's review how to increase your MPG:
  1. Inflate your tires to the recommended pressure.  If your tires are at 25 ppi² (which happens) instead of 35 ppi², that's a 20% decrease in mpg, equating to over $9 each time you fill* your tank!
  2. Lighter tires/rim are better. Every 50lbs. decrease mpg by 1% ∴ No heavy rims.
  3. Less friction with the ground requires less engine energy to move your car. Strive for minimal rolling resistance ∴ no low-profile, rain or mud tires. Engine uses 20% of its energy overcoming this rolling resistance.
    *My fill-up calculations were based on a single purchase of 15 gal. @ $3.01/gal.

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