i came home today, to find my bike with 2 flat tires. my dad said he had heard some loud bang earlier, and when i looked at my bike,the tires were completely flat, and practically off the rims. anyone ever heard of this or had it happen to them? maybe its because it was out in the sun or something? i have no clue, but theres like a 2ft long slice in the tube, as if it just exploded.