Quote:
Originally Posted by robrwalker
The issue is the plastic materials that BMW uses for these rubber gaskets. It is UV that is damaging the rubber.
Not sure about the painting options, but I know that in general UV is a problem.
This is a persistent problem on Z4's and I have discussed with a dealer who advised they always have customers complaining a couple years into ownership. According to the stealer, BMW uses "green" products which is why these deteriorate quicker. I think that's a load of 
-R |
By the way, Armor All also makes a restorer product for trim pieces like this and it is priced reasonably. Why not first try some of that or Mothers Back to Black to see if that helps.