Originally Posted by
Slunnie
10% isn't a law or rule, and in my opinion is a load of rubbish despite the number of people who support this. 350kg on the towball in my opinion totally messes up the handling, stability and braking of the vehicle, not to mention the problems with night driving that it creates. Personally I look for just a small amount of drop at the rear of the tow vehicle and for me that has been the best setup in my experiences. You need to be careful with how the weight in the trailer is loaded and where it goes in order for it to be stable, but I don't believe that ball weight is in any way an answer to generating stability of the trailer. In terms of how much can you tow legally, that is determined by the manufacturer and the towball rating, not the ball weight.
Disco - 4000kg towing, 120kg max ball weight - in practice it is 3500kg due to common use of a 50mm towball.
Disco2 - 3500kg towing, 250kg max ball weight
Disco Sport - 2200kg towing, 150kg max ball weight