Size Really Matter?

[f5fstop]

Remember when figuring mileage to take into consideration the larger tires which will set your odo and speedometer off. When doing 70 mph per the speedo, you will be doing something like 73 in actual speed. If you have a GPS, you can check out the difference between speedo and actual.
However, if your speedo is like mine, you might actually be doing the exact speed shown on the speedo. I checked mine with a GPS and I'm running about 2-3 mph under...when doing 70 on the speedo, I'm actually doing 67-68 per the two GPS units i used for testing.