Quote:
Originally Posted by M.B.DOC
Maintaining tire circumference is important on ANY car OR truck with traction systems.
If the ABS system thinks the rear wheels are going faster than the front ones it will try to apply the brakes.
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Make that ESP of course.
There are two different things here.
First of all, the term "sensor" is almost never used with respect to speedometer.
But, indeed, changes in rolling diameter of the wheel/tire combination WILL affect speedo accuracy.
Secondly "sensor" is in fact most often used with regards to ABS/ESP (braking/traction control) systems and changes in rolling diameter created by different tire sizes DO NOT affect performance of these systems ... AS LONG AS rolling diameter is same front-to-back and (obviously) side-to-side. Doesn't have to be same as original, just still same for every wheel--you can stagger the sizes but you ought to do it right.