08-13-2006, 09:39 PM
I was wondering how accurate the Vehicle Speed Sensor Pulses per Mile is, so I input the stock tire size and rear gear (245/50/16 = 25.65" & 3.23) and came up with 101588 and a Trans Output Shaft Revs/Mile of 2539. Then I pulled up the stock tune and it reads 104612 and 2615. That's a 3% difference, hardly enought to lose sleep over, but certainly enough to cause trans calibrations to be off. Any thoughts on this, or is not worth bothering over?