Yeah I carry a full set of knobbies on my back wherever I go, and I strongly advise everyone who takes their tires to a dealership to follow suit. You get the point. If you ride long distances you need to carry tire irons, a pump, and a 21 tube. This obviously doesn't do you any good if you take your tires to a dealership. Obviously you know this, but some of these guys are setting themselves up to be a burden on the trail. PS, I dig your signature!!