I just removed my front and rear wheels to put on some new tires. My bearings look well greased and the axels looked good as well. Besides re-greasing the axels and cleaning the dust seals before I put the wheels back on, should I worry about the wheel bearings??? I don't have a bearing puller and was wondering how often you should grease the wheel hubs and bearings. I hit the mud every once in a while, but by no means do I ride in the water all the time. My bike is a 2002 and it has about 1200 trail miles on it.