OK, Checked the archives came up with this: I upgraded my tires from stock 245/70X16 to 255/85X16. This equates to about a 12% speed correction e.g. speedo reads 70 mph, acutal is 78.4 mph. I have 19 tooth count on a 6-18 gear. To get back to a normal reading I need to drop two teeth, i.e., 17 teeth. BUT, (here is the rub) I can only drop 1 tooth. Is this correct? <img src="/forums/images/graemlins/frown.gif" alt="" />

Sadly I had to get rid of my 1996 Trooper 3.2L due to a rusted frame.
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