While my last 1100 had a calibrated speedometer, my current 1100 has the standard unit, but is never more than between 1 and 2 mph different from the SatNav during constant speed riding... and pretty much throughout the range from about 30mph upwards.
However, every 1300 I have ridden with has a much higher error, often nearer 7-8 mph out at least at 70 mph or more....
However, every 1300 I have ridden with has a much higher error, often nearer 7-8 mph out at least at 70 mph or more....