Originally Posted by rh71

Sport pkg 19s are all-seasons, at least for US. 20s if you get from the dealer are the summers. The 20s don't need any extra work whether you're coming from 18s or 19s - just throw them on. I'm very satisfied with 20" all-seasons here in NY year round. You may need winter tires instead of those 19" all-seasons up there in CA. If you don't want the sport pkg, then you may as well stick with the 18s and throw winter rubber on. I'll never tell anyone to stay away from the sport pkg though...