Reduction of the maximum permissible weight due to 3.5 ton limit

Hello Together, is there a way to push his team weight to under 3.5 ton? The question is to be understood as follows: My team (see signature) is a Vectra with a zGG of 2.155 kg and a hobby with 1,350 kg (loaded up). So I am in addition with the permissible total weight at 3,505 kg, i.e. seen from the papers 5 kg above the magical limit of 3.5 ton. In D I drive with 100-er registration. So I can drive in Austria on highways but only 80. With the I don’t know what the French are doing at the moment, but it could turn out that way, too. Other countries also lift up to a maximum of 3.5 ton, in order to make it possible to drive faster. To eat up to 5 kg now: Do I go to the FOH or to hobby? Or what is it right to do to achieve this goal? Who has done something like this (actually the opposite way, normally you weigh on) before? Greeting Günter