How do you store mc tires? Do you store them on their side or on the tread? I got a heck of a deal on two Dunlop D-404WWW, so I bought them. They were made in early Dec. 2010 and I won't install them until next fall. They are covered with a tire plastic with elastic in the center to keep it fairly tight. I will not put them in the garage attic due to heat, but will leave them on ground level.