So, the discussion wasn't entirely useless; I learned something from it.
Otherwise, don't worry, Martin, the ZR change won't cause you any problems.
P.S.: I have already had to experience firsthand that using car parts as a reference should be done with caution.
I just wanted to quickly show you the pictures.
Since I happened to have it on hand, the CT945 is the improved version of the 867 and should (or is supposed to) be used instead.
Be careful with autoteile.cc. They advertise the Conti 945, but then ship a generic replacement part that is the 867, which is not approved for the AFN engine.
Attached are the technical specifications from Continental.
Does anyone know of a good, affordable source for the Conti ZR tire or a complete set?
By the way, the tensioner pulley on my car broke, even though the timing belt was almost new.