TÜV complains about different indentation depths for rims

Was just with my roomster at the TÜV, now I have as a considerable lack wheels 1. axle left and right version inadmissible…had exchanged with my father at the front times, for any that we just had there. Pressing depths are actually different with ET 38 and 40. Now I have thought about whether I just put a complete new set of tires on it with new rims, especially since the tires are pretty much through. Now I’m a little unsure what kind of rims on it d I have an approval certificate, there is called as rim size 6Jx14 ET37. If I do this on it, I have to have a general type approval ABE, or can I choose this size freely under the rims? Can I possibly also take other rims? As rims are only mentioned, as tires are some in it, 7 different in different sizes… Would be really nice if one could give me a hint….thanks already…!