why cant i change my tire size

[rebuelta22]

i have 06 with 38s on it and when i go to set my tire size it says something about how you cant set the tire size on the lly and lbz whats up with that

[Mitco39]

It interferes with the ABS, you can do it. But you will get a flashing ABS light and parking brake light in your face. EFI Live is not able to communicate with the ABS module and thus this cannot be solved with EFI Live. I have heard of some companies allowing you to flash for tires that large.

[THEFERMANATOR]

You can chnage the speedo in a LBZ as I have done it, the problem is you can only correct for up to about a 35" tall tire. Any more than that and the ABS will throw codes as you cannot correct the ABS wheel speed sensor settings with EFILIVE.

[JoshH]

Change the revolutions per mile rather than trying to use the speedo calculator. Lower numbers for bigger tires.