I'm thinking of swapping my boring stock wheels for RS4s. Anyone know where I can order new OEMs? Are replica's just as good?

 

Hartmann seems to be a good source of Audi (and other) replica wheels:

http://www.hartmannwheels.com/1-425-895-0000/wheels/Audi/1

Another source of replicas:

http://www.lakeshorewheelandtire.com/specials/audi.shtml

I've heard that the actual OEM wheels are quite expensive.

 

Look for them on eBay. They'll show up and if you get lucky you get a great price. I didn't want "replicas" so I waited a few months and finally snagged a set of the 18" 5-spoke RS6 OEMs with tires in fantastic condition for $970 (shipped).

Deal was cheaper than a set of replicas!