I have begun to see some wobble in my single-speed commuter bike and was wondering what would be the best way to beef up the bike and not worry about curbs and the occasional pothole. I'm in SE Minnesota, so the winter gets treacherous, but I want to brave as many as the elements as possible and keep the steed upright. The frame can accept cyclocross-width tires, so any suggestions on a build or make/model would be greatly appreciated!