I'm looking for a 17" solid rear wheel, so I figured why not the fat boy. The 2013 comes in 17" but the tire is a 200. So my question is will a 200 fit my 2012 RGC? Supposedly its only 3/8" wider or so which means 3/16 on each side. Anyone riding a 200 rear on a RGC? What the rim size 6.5?