barspen Posted January 22, 2013 Report Share Posted January 22, 2013 (edited) I just replaced my OEM Goodyear Eagle F1's with a set of Continental ExtremeContact DW on my 2011 GT500. So far I like the new feel...much more grip and they seem to take corners better. But I noticed my MPG is lower by 10-20% based on built-in computer. With the F1's, I could do a steady cruise on the expressway around 70-75MPH and get close 23-24MPG. I'm lucky to hit 21MPG after the tire swap. The 10-20% hit seems to hold up in city driving and overall mileage too. I have the new tires set at about 36PSI (tire shop set them). Any idea why I’m getting less MPG or suggestions to get it boosted back up? My GT500 is a daily driver, so I'd like to get the best MPG I can. Edited January 22, 2013 by barspen Quote Link to comment Share on other sites More sharing options...
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