What is the offset of the KV5s....
If they are 45 and you go 35 they will stick out a weebit more than 5/8"
Joshv1452 has some 9"wide 35 offset on 275/40/18s in this thread
http://www.gpona.com/forums/gxp-area...et-t28232.html
If i remember right he has SSCs on his stock Bilsteins