Hi all, I just got my first bmw a few months ago and love it! 2001 325ci convertable. It came with style 45s and I want to get a new set of rims for summer and use the old ones for winter tires. I can't decide whether to go for 17s or 18s. I want to run a balanced set up. This is my everyday car and I do take the occasional long trip in it, so I'm concerned about 18s being to rough, especially on the crap Omaha roads where I live. But I would like to improve the handling a bit so I can take it to the track a few times a year. But ultimately I want a good balance between handling, comfort, and economy. Any advice would be appreciated.