For the rear, I was going to order:
Rim Diameter: 19 inches
Rim Width: 9.5 inches
Bolt Pattern (Number of Holes): 5
Bolt Pattern (Pitch Circle Diameter): 4.41 inches
Offset: 50 millimeters
Backspace: 7.2 inches


For the front:
Rim Diameter: 19 inches
Rim Width: 8.5 inches
Bolt Pattern (Number of Holes): 5
Bolt Pattern (Pitch Circle Diameter): 4.41 inches
Offset: 47 millimeters
Backspace: 6.6 inches

I plan on lowering with H&R Sports, 5mm pad in front and 9mm in the rear. Will I have any issues with rubbing?

Thanks!

 

Judging by the specs, you should clear with no rubbing no problem. You can probably go with 265 or even 275 although you might rub when the shocks are fully compressed with 275s. What wheels do you plan on ordering?

 

How wide do you think I could go in the front? I'm a little concerned about the lip on the wheels - it would be nice to have a little bit of rubber between the lip and the curb! Seems like every time I have a valet park my car it has a new scuff!

The wheels are Concept One RS8 in hyper silver. I'm considering black instead of hyper silver, but I'm not sure how the matte finish would look against the gloss black of the car...

 

Just ordered the hyper silver. I've got the springs on the way. Just need to go by MB to pick up the pads and then get the rubber mounted.

 

...after reading a little more, I guess I'm going to go with super sports instead of sports. I'm a little torn though...I don't like the tucked and slammed look. I like about 1 finger-width of wheel well gap. But from what I can tell from looking at pictures, the super sports will be just a little bit less than a finger width, but shouldn't tuck with 19's.