The 8Jx18 wheels have 245 width tires, but the S-line and Prestige SP 19s come with 255 width tires, so I'm hoping the wheel width gets bumped up to 8.5". This is the same width rim that's used on the B7 RS 4, but I kind of doubt Audi would go this aggressive on a non S or RS model.

Current car: '07 BMW 335i 6MT, Sport, Premium, USB/iPod, rear sunshades, Crimson red on Lemon/black
Previous car: '06 A4 2.0T 6MT, S-Line, Premium, Technology, Quartz gray/Ebony