Product review (5 stars): Stop fighting with that bottom rack!
Our dishwasher was down to 2 wheels on the bottom rack, and it was making a lot of clicking noises when I ran the cycle. I figured replacing the wheels was a lot more affordable than replacing the dishwasher, so I ordered a bunch of wheels. My dishwasher is quiet again and it works so much better too! The bottom tray rolls nicely and stays on its track. The wheels were too hard for me to get on, and even my husband used a screw driver to apply pressure to force them to clip to the bottom rack. Still only a 5-minute project to make my dishwasher work so much better!