hi, i was wandering how your fuel mpg's are now that you have the 235's on? i put 235 cooper st maxx's on my '01 dc and lost about a 1.5 mpg. thanks
You probably didn't lose that much. Are you compensating for the change in your speedo? Use a gps to check your speed, then calculate how much it's off by. I went to 33x10.50's, Mine is off by about 7-8%.
Example, 310 miles traveled, 310 x .07 =21.7 so 310 + 21.7 = ~332
So, if my truck says I've gone 310 miles, I fill up with 18 gallons, that's ~ 17.2 mpg
actual miles traveled - 332 / 18 = 18.4.
On my last trip, I went from Cedar City, UT to Flagstaff, AZ in one tank. When I calculated my mileage from the ODO, it was like 17.5 mpg. Then I got on Google maps on my iPhone, dropped a pin on the map at the exact gas station where I filled up, then at the gas station where I filled up in Flagstaff. I calculated like 19.5 mpg.