Chosen Solution
My Roomba 600x series goes in circles and once i disassembled it one of the wheels when i am trying to spin it have some kind of resistance but another one spins super fast free without any resistance. I do not know is it correct or not that wheel spins without resistance like there is no motor or anything connected. Should i replace this wheel?
First, you should check for something stuck in the between the wheel and the wheel wall, which might fix it. If not, then yes, you should replace the wheel.
