Originally Posted by Cookee
I learnt recently you can get done for "Theoretical overload" so if the permissible weight on the trailer exceeds the towing capacity of the tow vehicle he could get done!
I think you're right there. Yonks ago (so long ago the details are a bit fuzzy before anybody jumps on me) I was pulled by plod for pulling a very large empty trailer with a Disco. He said that I needed a tacho, which I didn't have. Anyway, to cut a long story short, I didn't need a tacho, but one of the things that came out of it all, was that as soon as you hitch up a trailer to a vehicle, the Gross Train Weight rules apply even if the trailer is empty. E.g. 2 tonne vehicle + a trailer that can carry 2t (even if it's empty & only weighs 1/2t) the GTW is 4t, if the GTW of the towing vehicle is 3.5t, you are 1/2t over.
Like I said it was about 18years ago, so the rules might have changed.