Bought some recently for my latest project, non Audi, but VW from VW heritage. Sorry no pounds symbol on my computer, only dollars, I got it cheap from some chap called Trump…..anyway, these caps were $1.60 ( pounds , not dollars ) BUT and here is the but, they are a loose fit and I'm in negotiation to return them as they'll fall off at the first bounce in the road…..
I wonder if they would be any better on an Audi? Only remedy is probably to pad them out inside and then push into position FIRMLY. …..maybe a little chewing gum, used of course, might be an answer ?
