I found a great deal on a set of 18x8.5 in. BBS RC wheels, but the bolt pattern is 114.3x5 with a 38 offset. Will these fit my 2000 A4?

 

NO. You should have a 5x112 bolt pattern.

 

As far as i know all audis are 5x112 with a 35 offset. I've owned 3 audis now all different years and they are all 5x112

 

The TT has a different pattern (5x110 maybe?), but other than that, each Audi I've seen is 5x112. 5x114.3 is a common Japanese offset (I had that on my 300ZX, and the Supra and I believe the RX7 share that pattern). I wish it would fit - I'd have used the Volk AV3 wheels from my Z on the Audi, although an A4 with 245-40ZR18 front and 285-30ZR18s would've looked a little silly (but tough).

 

The tt's are 5x100