[MarineHawk]

I can't tell you for sure that my odometer and speedo were properly calibrated with the original tires because I didn't check it then, but with my 37" Cooper STTs at 40 psi, my odometer now reads almost exact 7.0% low. When I had them at 35 psi, the odo read 6.7% low. This from using numerous milemarker comparisons. Always comes out the same. I.e., on many Virginia highways, the have milemarkers every 1/10th of a mile. When I zero mile trip-o at mm 100.0, my odo reads 100.0 as I am very close to mm 207.0.