Some time ago I read...I think in Motorcyclist Magazine...that a motorcycle gives the best gas mileage in the RPM range where the torque is maximum. Whether or not that is true I don't know, but my recent experience has been that I see better gas mileage when cruising in the 4000-5000 RPM range, rather than below 4000. This is mainly on country roads where my speed is in the 40-50 range, so I can cruise in 6Th gear at less than 4000 if I choose to. However it looks like by dropping down a gear or two, thus keeping the RPM's in the 4000-5000 range my mileage improves. Does anyone know where the torque curve for the 500 approaches it's peak?