Support load Exceeding, tolerances ?

Hello, after the last contributions on the topic between 3 and 6 years ago, here now my new question: Is there somewhere a rule/legal regulation, by how much the support load (100 kg, Tiguan) can be exceeded ? What happens if one is ‘traced’ with an increased support load ? Are there limits prescribed by VW ? (I also asked the question in the Tiguan forum ) It is about the construction of a bicycle carrier on the WoWa drawbar with an Al-Ko ball and on it 2 wheels Without wheels, I can get to the 100kg, with the wheels I lie over it. Thanks Alfons