I'd go with 205/40's thats usally standard with 17's on a contour but I would roll with 18's wrapped with 215/40's it takes up a litle more wheel well space
Infinity 6 1/2 in. speakers in all doors 2 10in. Kenwood Tornado Subs Logic Soundlabs 840 watt amp my car would be sweet if the cops didnt take all my money