I just bought a used Trek Kids mountain bike with 24" wheels on Craigslist for $35. I'm planning on giving this to my daughter. The bike is generally in good shape, but I thought I would overhaul everything. Last night I disassembled the front hub. I was just going to get new bearings and repack with grease, but I found a little pitting. Each cone has a slight scratch it it. The race on one side has some corrosion on it. I know the proper course of action is to get a new hub since this one has some corrosion. However, my daughter doesn't put many miles on her bike, and I'm wondering what harm there may be in just repacking the hub with new grease and bearings? Is there any harm to riding on a pitted race or cone?
If this were my bike, I certainly would get new hubs because I am relying on my bike for transportation. My daughter, on the other hand, still does most of her riding up and down our driveway.