What turning circle should I be looking for in a power chair? I took a turn for the worse last year and it's now time for one. I've looked at a few power chairs and have a rough idea of what I don't want, but I'm vague about what I do want. I got a used scooter last year, but I don't like it, mainly because my thumbs are too weak too hold the "go" lever for any length of time, but there's a few other reasons too.