You know those cops on bikes? I always feel sorry for them. They're bikes always look so sad. I was riding around a cop on a bike and looking at his bike I noticed how his tire tread were reversed. He had them opposite direction, but wrong wheel. I couldn't help but show him the difference between his and my bike, as he was admiring my fat-tire ride. I told him it really wasn't that critical if your tread was going the wrong way, but any little performance gain is going to help. He took my advice and said he was going to switch them around. I thought that was cool and think cops should have better equipment, espescially when they're using a mountain bike while enforcing the law!