benzviking

I'm looking to spice my stock 2000 E320 with 18" AMG Aero II wheels staggered setup, and lower it to look similar to the E55. The Tirerack site reccommends 235/40's in front and 265/35's in back. I was just looking at an E55 with the same rims, and it had 245/40 and 275/35s. Why is the spec different? Larger overall wheel diameter on E55? Is the wheelwell larger?
Sorry if it's a question.

Luke@tirerack

our web-site can be abit conservative on tire fitments but, the AMG car does have rolled fenders from the factory