SO I have an older mnt bike and the front wheel's brake track is somewhat glazed over. There are no groves and the worn part is not much deeper than the non worn are of the side rim. I was wondering about useing a stone or a sanding block to touch up the brake surface. I now you'll want to tell me about the sidewall getting to thin and that would be dangerous. I'm not wanting to do much more than get the slick surface honed enough to have some fresh material for my pads to rub on.

Any thoughts?

Ryan