Similar but different problem. My 2013 will go for miles, no hands, sitting perfectly upright, no leaning one way or the other. HOWEVER, my original Metzler front tire, at 10,000 miles, is slick on the left side. No crash bars, etc. etc. Was dropped once on the right side, while sitting still, and once on the left side, while a friend was trying to turn her around in his paved driveway. Something ain't right. I'll try to post a pic later, still in robe and sippin coffee here.