Well, I use to track my mpg, but once I exceeded 103 mpg I decided whats the point.
The longer the trip the better the mpg. I use to commute anywhere from 43-300 miles a day. I use to drive 150 miles twice a day. Do that with no ac and around 60mph and you just watch the mpg rack up. I also use to buy gas in the county vs city which had less ethanol and more mpg.
Cant help you with tires, Im sold on traction vs mpg. I rather have to slow down to merge into traffic vs speed up.
