Just an update on the tire situation. I got rid of my falcon 452's and replaced them with a set of Vredestein Ultrac Sessanta tires. The difference is significant. They have better traction on dry and wet pavement. So much for listening to friends recommendations. I really like these Vredesteins.
Also, for tire size, if you put 235/35/19 on the front and 275/30/19 on the back the radius of the tire+wheel is identical.
2008 BMW 535xi : Black Sapphire Metallic / Grey Leather Interior, Automatic Transmission, Premium, Sport, Cold Weather, Comfort Access, H.U.D., Navigation System, PDC, Rear Sunshade Package, Folding Rear Seats, Rear Side Impact Air Bags, iPod/USB Adapter, Sirius Satellite Radio.
Current Mods/Add-Ons : 3M Clear Bra , Front Illuminated Door Sills, Dinan Stage II, 19" Staggered M3 replicas.