i usually run 185 65 15 stock tire size in the summers and 195 65 15 blizzaks in the winter, with the steel wheels I obviously take a huge mpg hit in the winter, but its only a few months and with lives on the line the mpg hit is well well worth the cold temperature traction and extra ground clearance the 195's give me. but I just picked up some 16" touring wheels (thanks El Nino), 195 55 16 tires have just a slightly smaller overall diamater (24.44" vs. 24.47") over the stock tires, so what kind of mpg hit should I expect with this wheel and tire combination that is the standard touring size?? also if I go to a larger overall diameter size such as 205 55 16 what mpg should I expect?? how about 195 60 16??