ABS problems with tires over 34"

Catalinajack

New member
Jun 27, 2013
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I have a Duramxtuner ECM. I gave them my exact tire size circumference (about 33" tires) and they calibrated my speedo such that it is spot-on according to my GPS. I do not have any braking problems. Perhaps Duramaxtuner accounted for the ABS as well but I have no way of knowing that. I just have never had any braking problems. I'm running Bridgestone Revo 2's, LT285/70R17's.
 

LBZrcks

.........
Jun 2, 2007
5,297
12
38
38
SoCal
I have a Duramxtuner ECM. I gave them my exact tire size circumference (about 33" tires) and they calibrated my speedo such that it is spot-on according to my GPS. I do not have any braking problems. Perhaps Duramaxtuner accounted for the ABS as well but I have no way of knowing that. I just have never had any braking problems. I'm running Bridgestone Revo 2's, LT285/70R17's.

Nothing special or done differently with that ECM. The issue only comes up with ~35"s and bigger. With 33"s your front speed censors and output sensor are reading close enough to not trip any codes.