Phil,

If you are putting them on a Syncro don't machine the hole all the way
through. Which Audi wheels are you talking about anyway? If it's the 500
Turbo wheels, they look fine w/o the caps. I can pmail you a pic of the
wheels on a Vanagon if you want.

2WD's will be a challenge to put these on and still use the caps.

Velcro will probably collect so much crap after a while.

BenT