This has absolutely nothing to do with motorcycles. However, anyone that works on their own bike, car, whatever, can appreciate how gnarly these photos are. I had a wheel bearing go bad on my wagon. How do you know its gone bad you ask? Well it sounds like you have rocks in your tires. I buckled down and pulled it out last night. It was a pain in the ass to get out and here you can see why. I have never seen a ball bearing do this before. They are like little squares.