Congrats on the F250. Did you get the Tremor or the regular Heavy Duty?
I'm driving a 2015 F250 with the gas engine and BF Goodrich K/O2 265/70/R17 (stock size) tires and I'm able to get about 13-14 mpg with my Hawk, and it doesn't feel overloaded whatsoever. Plenty of power on hills, etc. I...