Hi everyone, I'm new here. I have been looking all over the WWW for info on my problem and hopefully some of my fellow toyota owners can help.

Vehicle is a 2k Taco 4x4 4cyl.

I upgraded from p225/75 R 15s to 31 x 10.5 x 15s and now my speedo/odo are off by about 9.5% (too slow/short). Now I know about the dakota digital thing, but I'm sure there is some way to remedy this issue without this device.

On my vehicle the 31s were a factory option (although probably only on the 6cyl.). So Toyota has a way to adjust the speedo/odo calibration to correct for the swap from 225s to 31s. Anyone know what it is and how to do it?

Thanks.

 

the vehicle either uses a gear in the transmission or rear axle that can be changed or its elctronic and devices like a superlift tru-speed can correct it via programming

 

IIRC, the dealer can program your ECU +/- 10%. What I do know is that my Speedo is about 3mph slow, and my ODO is 10% slow since the speed sensor is before the diff, and the 4.88's changed the odo.

 

gapguy, can the dakota digital correct the odo? or just the speedo?

http://128.83.80.200/taco/speedo.html

 

No clue....Schaefer did this, I THINK.

 

These...