I currently tow with a Citroen C5 2.0 hdi estate. I only know the unladen weight of my vehicle (1438kgs), which gives me 1222kgs (85%)for my caravan which weighs in at 1220kgs (MAW).I am going to get a new Dethleffs 2 berth which has a max' weight of 1300kgs with a possible chassis increase to...