Guys: I noted that Pelican Parts is selling low-clearance floor jacks that some of you could use, since you have lowered your already-low cars. These get as low as 3.15". Not cheap at $400 and up, but look like good quality and are made in Denmark, instead of China. I have no financial interest etc.
https://www.pelicanparts.com/Audi/catalog/shopcart/TOOL/POR_TOOL_ACHyd1_pg4.htm
https://www.pelicanparts.com/Audi/catalog/shopcart/TOOL/POR_TOOL_ACHyd1_pg4.htm