I am really disappointed. I know what it takes on most bikes to keep the tires in good shape. I have owned this bike for 6 weeks. I have checked tire pressure 4 times and it's always been adjusted to what the manual says. It has never been off by more than a pound or two for very long, if at all. The tire is all wavy and uneven. I'm sure someone is going to say its an infation issue, and maybe it is, but thats just blows my mind. Any thoughts?