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  1. Newbie...2 problems... New rims and tires = MPG way down....4X4 EPS gave out!!!

    F150 Ecoboost Chat
    First of all I want to say hi as I am new here, thanks for letting me into the group. Okay so here goes. I had a couple questions to see if maybe yall can help me out. 1. I just got some rims and tires put on my 2012 FX4. I went from the 18 in rim to a 20 in Rockstar with a 275-65-20 BF...