Carry A Spare! - An often-overlooked advantage of folding tires is that they can be carried on rides as spares. Folders pack small enough to fit in a seat bag, jersey pocket or suitcase (when you travel with your bike). You can even tie or tape one to your frame. This means that you can pack a spare if you're concerned that one of your tires is ready to fail or if you just like being prepared for everything.