Used to get about 95 miles until the light on my 999S (85 miles at Brands though
). I've changed to super-unleaded fuel now, and now get about 106 to the light come on.
Reserve I always used to think was 25-30 miles ... until the day I had a little chase with a Honda Blackbird ... I literally coasted into the garage on a dry tank after 18 miles on the fuel light.
My 750ie gets about 140 to the light, and a sure 25 miles on reserve. (I once saw 195 miles on the odometer between fuel stops.) I used to think it was 30 on reserve until I had to push the beggar half a mile to the petrol station one day.