After studying Prutsers bike which he says is 188kg with a tank a ( 19l ) of fuel, I want one like that.
Take away the fuel it makes it 175kg ready to go with empty tank. Thats only 10 kgs heavier than my DR650 and the C.O.G would be lower on the Airhead.
So, can an R80GS be stripped of enough weight to make it the same. In theory the engine and main frame should weigh the same.