Ok here goes im so confused i have a 2012 jayco expanda 16 foot it isnt the outback model with bunks i looking at upgrade to 18 foot outback with ensuite i own a hyundai terracan it pulls it perfect even fully loaded on my tow bar plate it has towing 2500kg which is fine now i believe the 18 foot is around 2175 kg tare weight does that include fridge mucrowave ect now on plate also has downward weight 200kg with 5 passengers and 150kg with 7 passengers so i gather if i tow the 16 foot with 7 passengers im over loaded but if i have a trek and tow it says 250 kg with 5 passengers and 200 with 7 passengers now i dont think the trek and tow on my 4wd but the shocks are yellow in colour so it looks like the shocks and spring might been changed im not sure would this be the same as a trek and tow ones so ball weight is higher and is it possable to buy the 18 foot outback and tow with this vechicle