Rims not registered – penalty ?

Good morning dear Motor Talk Forum, despite a detailed google search I did not get a specific answer to my question so I have to contact you now. I have ordered new summer tyres for my car because the current summer tyres or rims are not registered and also have no KBA number or similar. The delivery needs however still a whole two weeks and I would like to change my tyres so that the winter tyres do not wear out so much and because the rims on of course, the summer tyres look much better. Of course, I can have the bad luck and be stopped in these two weeks (I live in the country and was checked only once in my almost two years but the danger still exists). My first question is now how high is the penalty on unregistered rims and will it prolong my probation period? On the internet I find 50€ penalty as well as a point, but is it also extended my probation period (it is only 3 months) ? The more interesting question is but what “example” would you use? I drive a Hyundai Coupe which is generally a bit “dunted”. But it is all entered and is of course carried along. If the police eats what is with the rims you would rather say “They are series (o. a. – the rims don’t look very “specially”) or should I try with “The rims are registration-free?” Does any of you have experience with such controls or can of his n Telling experiences? I thank you already in advance for your help.