Quote:
Originally Posted by blackoutt
Too hard to calculate a mpg change with so many different variables in fuels, temps, terrains, adding bigger tires, more wind resistance, hauling more or less shtuff. The biggest header gain I found was just in driveability/response and also less downshifts on slight grades on the interstate (with stock size tires and gearing).
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I get that, which is why I'm taking the weekly average of similar trips to the mountains combined with my commute. I'll let it average out longer and see if goes up from there.