Even in Houston, 0.5 x 3250 = 1625.

Gear ratios are not theoretical. That's one of the niceties of mechanical engineering.

On the other hand, speedometer and tachometer readings may be inaccurate, and that's where the discrepancy lies. If you knew what your tire revolutions per mile was, you could calculate everything else.

R.

Last edited by dogdays; 07/09/15 02:24 PM.