mynameisbill

so if i go from 17X9's to 18x(anything) am i going to have to get the speedometer re-calibrated? some people have mentioned it to me that changing tire sizes could affect the speedometer... i didn't really know so i thought i'd ask...

v6'stang

depends on if u change ur tire size. the speed changes from teh outside diameter, (tire) not the inside diameter (wheel) soo if u go from running stock 16x8's? with stock tires on it to an 18 w/low profiles on it, ur speedo. shouldn't change much at all if the outside size is about the same

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Mods:
17x9 black cobra wheels, BBK CAI, tru dual flowmasters, sct 4bank elim. chip, motive 3.73's, frpp t-lok.


...and the list grows.

WaterDR

Yup...it is all about the tire and wheel height. As long as it stays equal, the speedo will be the same.

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