Speedo Calibrator
So after I upgraded my 265/60/18 stock Michelins to 265/70/18 Cooper Discoverer AT3s, my speedo/odometer are obviously off.
With that said and reading threads about Ford wanting to/voiding the warranties on people's trucks after discovering that the owner used a tuner, should I be worried about using a Hypertech or any other companies Speedo Calibrator?
I just want to get my truck's speedo/odometer to read as accurately as possible as I am one of those people who care about my MPGs, at least while I am still in college =P. I may be able to get a family friend who is a mechanic at Ford to hook me up with a deal to re-calibrate my truck but I want to have a backup plan in case it does not come through.
Thank you for your time and any info is appreciated.
With that said and reading threads about Ford wanting to/voiding the warranties on people's trucks after discovering that the owner used a tuner, should I be worried about using a Hypertech or any other companies Speedo Calibrator?
I just want to get my truck's speedo/odometer to read as accurately as possible as I am one of those people who care about my MPGs, at least while I am still in college =P. I may be able to get a family friend who is a mechanic at Ford to hook me up with a deal to re-calibrate my truck but I want to have a backup plan in case it does not come through.
Thank you for your time and any info is appreciated.

