i just bought the bully dog power pup. i have 285/75/r16 tires on there. i changed the tire size on the programers to 32" is that right or do i have to change it? cuz it seems like my speedometer is off... any input guys?:conf used:

 

The actual exact equivalent is 285/75/16 = 32.8x11.2/16 this is from a conversion calculator that is found here...
http://www.redrock4x4.com/tech/tire_...&method=metric