Ronal (15" from a 5k) Center Cap:

[Huw Powell]

urq wrote:
> ... when they were new the caps should have held themselves in ... I suspect
> the goop may have been installed by a PO or service provider somewhere along
> the way.  
> 
> You need to find some adhesive that won't set as the caps need to come off
> when you have tires fitted ... 
> 
> The stuff that comes to my mind is that sticky gasketing material they use
> to hold and seal taillights ... 

3M Strip Caulk is great for that sort of thing.  Lasts for years, if not 
decades.  In that application it will probably need periodic renewal due 
to attrition when removing/replacing the cap though.

Also, try to read the part number off the cap, see if dealer can get 
one.  First, though, make sure the cap is the same # as the ones that 
work - a few wheels used similar, but slightly different diameter, caps.

-- 
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/