I just bought some American Racing Hot Rod Nova Chrome 20" wheels to replace the tiny 17" ones that my SE  came with.  I also bought the 255/45/20  Yokohama Parada Spec-X, and couldn't be happier.  Didn't give up much at all, if any, in ride comfort.  It also handles much, much better with the lower V-rated profile tires. Love Yokos's; been using them for years.