I've order through my friend's shop from Vancouver, BC. He has a good connection with HRE. If I remember correctly, they are ET46 up front and ET34 at the back, but I believe the front can be more aggressive, say for another 5-7mm.

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2008 A4 3.2 Sedan Quattro Tiptronic (B8) - Ibis White
-HRE Monoblok M40 20x9 w/ Pilot Sport 2 255/30-20
-ABT body kit
-ABT exhaust
Coming Soon...
-KW V3 coilover

Retired
2006 A4 2.0T Avant Quattro Tiptronic (B7) - Ibis White
-ABT AR 19x8.5 w/ ContiSport 3 235/35-19
-ABT body kit
-ABT exhaust, Milltek mid pipe
-K&N filter, REVO stage II