I'm new to the list but I've read the archives for a little while and
have noticed a bit of correspondance on using Audi rims.  One thing
concerns me is that if one "machines" the center too large.  The center
of the rim is supposed to fit snuggly on the shoulder of the hub. The
lugs alone aren't dependable enough to carry all of the weight and abuse
down the road for <enmasses> eventually they may fail.
 This is probably why when you have removed all lugz from a older VW
wheel then can't remove rim.  ( pull out the beater--torches--curse
alot--drop the jack )
a common prob but the nature of the rims job.
  Remember that weight is multiplied by force and
a pot hole @ 55mph X WEIGHT = EXPONENTIAL DAMAGE (the van cannot drive
on 3 wheels like the bug)
Daniel Stevens
Operations Specialist