> um, 65 * 3000/2540 = 77 mph. three significant digits? I doubt it. > >From my school days and observations of gauge accuracy I'd say it's more > like one. so 65 @ 2540 implies 80 @ 3000... BTW, my coupe also does 80 One digit, close ;) Everyone else... remember VDO make the tach too. I don't know why anyone would think that a VDO tach would be any more accurate than the VDO speedometer. Orin.