Not entirely sure as was sort of sucking in a lot of info at the one time. I think at 100kph I am doing around the 1900-1950rpm, 110kph sits around 2000 - 2050maybe, not sure on 120kph. When i am next out I will take some better numbers. These are probably worst case in some regards as the sample time is so short. Also, I have a large frontal area with the roofrack that does not help. Yes 33's and 3,9 with man box.