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17" TIRES/AUTOMATIC SHIFT POINTS
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03-28-2013, 07:24 PM
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YELOZL1
Drives: 2013 ZL1 Yellow & 1969 Z28 Orange
Join Date: Feb 2013
Location: La Salle, MI
Posts: 15
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If you change your tire dia. (smaller) it will change your rear end ratio gear here is a chart.
http://www.4lo.com/calc/geartire.php
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