first, I have to apologize to write in english and not german but I'm french and I was a good german learner...50 years ago!
I use more often english, so it's easier for me.
about tyre:
in france we are not able to find now the original bridgestone tyres.
we only find:
Achille tyres : cheap but "exotic" and quite unknown
toyo tyres : really expansive (110€ each)
after 80 000km with two copen and in relation with my "tall" age (I'm 64) I want to try to put more comfortable tyres on my car but without changing rims (felgen)
I think to buy 165/55/15 or 165/60/15
does some one as an experience about these sizes?
I have to say that a had a look on the excel table which is on this site, but...even with a translater I don't understand if it's possible or not!
If someone is able to give me some information about his question...
thank's a lot
olivier