Once again I have a question and I know someone must have the answer. When lifting a vehicle and changing the tire size you change the speedo and odometer readings, I saw that Superlift makes a TruSpeed Sensor Calibrator but in checking their applications it looks like they do not make one for my truck. I am only putting 285/75/16's on the truck I believe the stock ones are 255's how much of a difference am I looking at in terms of speedometer changes and more importantly how will this affect my odometer (falsely inflate mileage?) Lastly the lift will include spindle and rear leaf or blocks, if it makes a difference.

2002 Supercrew 4x2 4.6L V8

Thanks

 

Thats a pretty big tire change and you will need to recalibrate the speedo. If you don't your truck will shift wierd and you will have no idea how fast you are going. I bought a JET speedo recalibreator from truckperformance.com that is made by JET and although i have yet to install it in my truck it will work on your truck and is quite simple to install. The other option is to buy the superchip power programmer but thats is twice as expensive and with the way gas is today the 91octane programming can get expensive in a hurry.

 

heres the link to performce center which has both the JET and the Superlift onePerformance Center Link

 

MX4LIFE,
Buddy, Thanks for the help on this one, much appreciate it!