A:AnswerPaul,
I really don't know the answer to this question, but someone is our household is 250 lbs and loves this chair. So I know it holds at least that and probably more. I hope this helps.
A:AnswerI have been using the chair for some time and I don't see a say for it to tilt by itself. Maybe I am not doing it right but I don't see a way to raise and lower the back either.