If your 928 suffers from a broken, missing, ratty looking or weak spare tire cover, replace it with our new rigid tire cover. We make these ourselves out of hi-density black plastic, they are scuff and scratch resistant, will not absorb water (like the cheap wooden particle board ones will) and a perfect replacement for the OEM part.
We have seen the ones made out of particle board and they are cheaper, but not by a lot, and you may go through two or more of them.... and we won't sell them! This is a quality piece that looks like it belongs in your 928.