this is a great time to bring up my uncle's invention that he is trying to sell...........it is mostly for tube tires........it is a lil thing that u screw onto the valve stem so it cant popout when u let the air out of the tires and u can also remove the inside of the valve and fill the tire with the tool on.......it is complicated to describe but it works slick for changing tires but cant find anyone that wants to mass produce it so if u r interested i can draw up the design and send it too u........it is patented already