so im looking to put some 20x9s with a 275/65/20 tire on my new 2010 fx4 crew and im just wondering what kind of mpg it'll give me. anyone have a set up like that or have any experience with it that they could share?

right now, at 6500 miles, im averaging about 15 mpg. mostly highway but not taking it easy. best i had on all highway, keeping it under 65 the whole way was about 17. seems fairly normal for a fully loaded fx4 supercrew, right?
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