By those calculations you are stating that I am losing 50% of my power between the engine and the wheels. This is on a seven type car. I would have expected the maximun to be a 30% loss with the car producing 120Kw at the engine which equates to BHP160 at the flywheel.
I think the figures of 135KW and 180 BHP are a bit over the top.
Does anyone else know the approx losses between the wheels and the fly?