The tires are Vredestein Ultrac Sessanta. My first time trying this on any vehicle. I have not tried them in the rain yet, but on dry pavement they definitely handle amazing. I find the ride smoother (as does my wife) than the stock 18" Bridgestone RFT's.
I was leary to try this brand, but after reading many positive reviews had to give them a try. Some of the info I found is at http://www.xoutpost.com/bmw-sav-foru...ns-anyone.html