Hello guys, maybe the one or the other has already made this observation: Tacho-Display Tempo 100 (set with cruise control) View of the PDA-Navi (MN5) : Display at 92 to 93 km/h Higher speed brings even higher deviation. (at 120 are approx. 110 etc.) Who is right ? I would vote for the Navi, if the thing can navigate exactly to 5-10 m, the speed calculation would have to be quite accurate, or am I wrong. Oh, measurement with standard tire en (205er on 16″ rim, that’s not what it should be). Tachos “may” – I think to remember – 4% differ. O.g. values are already strongly above… Would also be important in contact with the green-dressed and their shooting systems 😉 Who has similar experiences ? LG Walter