The Audi will have known and predictable characteristics at anything up to its gross weight, as it has been designed, built and tested for it. Above that, it starts to get unpredictable, especially the amount the OP had.
For example, the suspension system operates on the principle of compression, but look how much travel is left in the rear suspension with that load. The rear shocks won't be doing their job properly for a start.
Slowing down of course reduces the risk of anything going wrong due to the load. However you can remove the risks associated caused by overloading altogether by not doing it. All the tests and results that Audi submitted to VOSA to allow the car on UK roads in the first place, didn't include and extra 0.5 ton to heave around, therefore it has no legal right to have that weight in it.
I mean, do really people think they really know better than Audi? They built the car for crying out loud.. it's pub engineering by motorists.. "Yeah is that Audi in Germany? Well the thing is mate, I think you're wrong about the max gross weight, I know you designed and built the car, but me and my mates down the pub know better.. I had a ton in the back the other week."
For example, the suspension system operates on the principle of compression, but look how much travel is left in the rear suspension with that load. The rear shocks won't be doing their job properly for a start.
Slowing down of course reduces the risk of anything going wrong due to the load. However you can remove the risks associated caused by overloading altogether by not doing it. All the tests and results that Audi submitted to VOSA to allow the car on UK roads in the first place, didn't include and extra 0.5 ton to heave around, therefore it has no legal right to have that weight in it.
I mean, do really people think they really know better than Audi? They built the car for crying out loud.. it's pub engineering by motorists.. "Yeah is that Audi in Germany? Well the thing is mate, I think you're wrong about the max gross weight, I know you designed and built the car, but me and my mates down the pub know better.. I had a ton in the back the other week."