Here is some of the information that may be relevant...
This latter table was for USA/ Canada if I recall correctly, not Australian models.... The above photo is of our tow bar, there is also a special sticker inside the drivers door clearly stating that our car is rated for 180 Kg towball weight, 2250 Kg tow max weight etc.
I spoke to a rep from Hayman Reece regarding their tow bar setup, even though the tow bar was rated to 225 Kg tow ball mass, and a 2250 Kg tow max weight, he stated that you could not exceed the tow ball mass in the original Volvo booklet, which for our car was set at 90 Kg.., Luckily we picked up a car with the original Volvo setup, took the pain away.
By the way, the car tows the caravan brilliantly, apart from slightly reduced acceleration, you would hardly notice it otherwise.
Hope that this helps to un-muddy the murky waters somewhat.........
