Originally Posted by godzsun1980

If you ride about once- twice a week you probably need a new chain once a year. They do stretch, if you change your chain out at this interval it will make your cassette and chain rings last longer. if you put a worn out chain on good casette and chainrings you will have shifting problems, if you put a new chain on worn cassette and chainrings it will wear the chain faster and you will have shifting problems. there is a tool you can buy to check for chain stretch, pricepoint.com of jensonusa.com