I have a 21 speed mountain bike made by Swinn(sp). I bought it four years ago, it's been sitting in storage for three now. I got it out the other day, pumped up the tires and it rode fine. I inspected the tires and I didn't see any cracked or worn rubber.
Should I replace them (and the inner tubes) to be on the safe side or do you think it's ok the way they are?
