I have Steve's aforementioned "7th fear" mod (nice Freudian slip, by the way, Steve), and the "Wing-size" Michelin Pilot GT's and my bike shows 3520 RPM at 65 MPH (indicated) in 6th gear. Before the mod it showed 4000 even at that speed. Steve's GPS method should be more accurate, it will correct for all that tire, speedo, tach error.