Quote Originally Posted by mimitabby View Post
if you let your tires get soft, the "Give" will pinch your tubes and flatten your tires. Put enough air in your tires to meet the minimum pressure recommended if you are a lightweight; more if you are heavier than average.

You will move a lot faster on properly inflated tires!

ps 12mph is NOT slow
Sounds like I'd better add some air then--I don't need a flat!