WOW Heres a question, I just put 33x12x50x17's on my 05, the overhead console tells me I get pretty much a consistent 10.5 to 11mpg in town, Is that infact wrong being I have 33s now instead of the stock 245x70x17'x. If I bring it to the dealer to recalibrate my speedo and overhead console will that 10.5 to 11mpg change for the better??

Thank you
Thank you