Here we go.......
There is no B8 RS4 (not yet), or RS4 wheels from a B7 A4 or some other weird name combinations people come up with.
RS4 wheels are exclusively 19x9" et 29 and they came on, well, an RS4. They are more concave and wider then the reps, and OEM wheels styled after those that you see out there.
It seems as if Audi realized it's a popular style and they created similar styled wheels and threw them on B7's, TT's, B8's, etc, BUT THEY ARE NOT OEM RS4 wheels. They are RS4 styled wheels yes. The ones you see on the other cars are not as wide and not as concave and are also 18's many times, meanwhile OEM are 19s.
I personally ran them as did staticuxo.
I ran 235/35/19 tire
He ran: 225/35/19
The only thing I did was roll the "lip" in the front fenders that holds the fender liner, and I removed the top screw. Yes I rubbed on bumps/dips and a completely full car. Static on the other hand, barely rubbed from what he told me, he had more stretch going on. If that's considered fender work, then I guess yea you need it.
Coilovers highly suggested, as it was look goofy without them.
here is a pic of mine before I got the coilovers setup to the height I wanted, I should have some other pics somewhere else with them on when the car was lowered more.
255 tire will require more work. I had a 255 tire mounted when i first bought my RS4's and I wasn't able to drop the car in the front since the fender rested on the tire -_-
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