Hi, I am a newbie and joined in order to try to get some helpful info. Please let me know if I am in the wrong site\forum. I just bought a Claud Butler, 15 speed, 531 Super Dalesman from the tip, for recreational biking, and I am trying to replace some parts. Could someone perhaps tell me the size of tires and tubes that I would need? There is nothing visible on the very old and worn tires that on the bike now.