We have a 14-year-old LG clothes dryer. It started squeaking, then rattling. Everything I looked up online pointed to one of the roller wheels going bad. The roller wheels are small rubber wheels on which the dryer drum sits and they spin in place to help the drum rotate smoothly when the dryer is running. I wanted to verify the roller wheels were the actual problem before ordering any parts. I found a few YouTube videos showing how to change a roller wheel, which didn’t seem too bad of a job, so I took apart the dryer. It was a little different than the videos I’d watched. Our dryer has a raised control panel that sits on the top back edge. The models in the videos all had the more contemporary panel flush with the top front corner. But the concepts were the same. I got it apart and found our dryer had 4 roller wheels, two in front and two in back. The rear bottom roller wheel was very wobbly, its axel full of lint and grit from years of use. It made sense to me as it looked like that wheel bore the brunt of the drum's weight. I ordered 2 roller wheels to have a spare which arrived in 3 days. I wound up having to take an additional inside metal panel off to change out the roller wheel; there just wasn't enough room to get a wrench back there to loosen/tighten the wheel to the frame. But that was only 6-7 more screws, all accessible from the outside back of the dryer. The wheel was perfect and saved us a good-sized repair bill: VICTORY. I did manage to put a small gash in one of my fingers, so do wear gloves as much as possible; it's all sheet metal inside so there are sharp edges and corners to deal with. Also, be careful with the control panel. It should hang down wherever you put it (the power wires are heavy and won't break), but it's a little heavy and you may have to move it around a few times as you open up the dryer frame. You don't want to break the control panel which is the brains of the machine. Good luck with your own repairs! It saves you money if you can handle it, and is pretty rewarding in the end.