Mark2Ikedas car looks the best on 17's - If you don't get the rim and tyre combo right then it simply don't work. The Juxta position seems to work quite well also (i.e alternative colour inner/caps to Loops body colour - All in favour say I). Still think 8J 15's are the best bet - Don't compromise chassis dynamics to much and still make the Loop look great - at least this way there's enough rubber being put down to give you proper traction, no scrubbing and less potential rim or curb damage (That is if you're a sh** driver!). For shows 17's do provide that instant wow but as said in the thread earlier do look a little tractorish and possibly if rim choice is dubious belong in the ministry of silly wheels.