All the same reasons I put them on my s14. I love em for a daily driver but you do still hit the lip spoiler. I have before and after pics on my webshots gallery.
http://community.webshots.com/user/burgy240 <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/thumbs-up.gif" border="0" valign="absmiddle" alt=':thumbsup:'>