Here goes.....why does Harley say to change the inner tube every time you install a new tire? Just can't figure out why? Does the rubber lose it's ability to hold air after 10K miles? Is it rubbing on something I can't figure out? Is it a marketing ploy to get another $31.00 out of your pocket? I'm not going to cheap out and risk an accident, I hate wasting $$$ tho. This is the first bike I had with spokes, and I don't like them, but nothing else looks right on a Springer, so I'll keep them. I hate cleaning them and I hate the extra expense of the tube. Seriously, why a new tube with every tire change, anyone know? Rant over !