I researched replacement wheels for my Roomba

Our 2021 Roomba j7+ is almost five years old, and its rear wheels are nearly worn smooth. I could see the problem. I did not know the right part name or whether replacing the wheels made more sense than replacing the vacuum. I gave ChatGPT two photos. It helped identify the exact model, look up OEM part numbers, compare manufacturer and aftermarket options, and stay under the price threshold I had set.

It also confused the standard j7+ with the Combo j7+ at one point, and I had to correct that before the parts research could be trusted. I have not installed anything yet, so this is not a finished repair. What I have is a much better understanding of the likely replacement parts and a reasonable path toward keeping the Roomba instead of automatically buying another one.