I have a 2008 GS 350 AWD. I stuck with runflats. I had three flats during the life of the tires, so they were very convenient. Also, I was told that 1) the car was designed to ride on them and 2) that anything but would be a softer ride. I don't know if any of that's really true. Surprised by the price of Dunlops, from tirebuyer.com I purchased Perelli Pzero Nero All Season P225/50R17 for about the same price as a high quality non-run flat. I had them shipped directly to my Lexus dealer. I now have 2000 miles on them and am very happy.