I just installed a Fab-Tech 8" lift on my 2000 F-250. Installed 39" mickey thompsons. Does anyone know if the computer can be reprogrammed at the dealer to correct for the larger tires.? I have got quotes ranging from 800.00 to 57.00 to correct and no one seems to know for sure what to do. I have ABS brakes on it and cannot use an aftermarket speed correction box.

 

$57 is probably right considering the dealer can reset the numbers in the computer, but only to a point.

www.angelfire.com/pa3/spaceace

 

I own a 99 f-250 with 35" tires and a modest 4" lift and I got the dealership to calibrate my truck to the correct tire size, or should I say almost. The dealership can only go as high as 34.5 inches on the tire size.

good luck
tony

 

did you have any driveline problems?front shaft in paticular?

 

I will let you know next week. The drive shaft had to be lengthened and the CV joint has to be modified. It is at the driveshaft shop right now. Why do you ask? Are you haveing problems?

 

agritron
i was wondering if you could tell me how many miles per gallon you lost with that lift and tire combo? also, do you have the 15 in. wide tires or 18 in.? thanks

 

agitron> Couple words of advice, just so you can avoid the same problems I had..

1. If you've already done your lift, without rear blocks.. good, if you're planning on using blocks, rethink that decision. Too much axle wrap, and the shimmy will drive you crazy.. However you do it, invest in a good set of Ladder traction bars.. L&L Products makes a good set, and they are relatively inexpensive, they make alot of difference..

2. Watch your Mickeys closely. 3 of mine are starting to split in different areas of the tire after only 4,000k. TSL SuperSwampers are having the same problem right now, but the manufacturer is accomodating the problems nicely. Hopefully Mickey Thompson will do the same.

3. If you dont need your front driveline, let your springs settle (and the Fabtechs DO settle!) before you lenghten it.. If you go too long, you'll end up compressing it into the slip yoke as the weight of the truck relaxes the springs. Or, keep an eye on it and shorten it back up when you see the boot starting to compress.

4. Have the driveline company measure the remaining amount of rear shaft still in the slip yoke.. You may want to contimplate adding an inch or two to the rear as well.. I had to go up 3 inches, because in reverse, under heavy load (I was yanking out a stuck Excursion) The torque of the motor will twist the axle, and my rear driveline ended up slipping out of the yoke and the splined end ended up in the sand.. not a fun fix in the middle of the sand dunes.. Good Luck!!!

-Ry
2001 Monster F350 CrewCab 4X4 7.3 PowerStroke, Bright Amber Metallic, 12" lift, 39" Mickey Thompsons on Weld Typhoons..