No, in this chair with synchronised mechanism, the seat and backrest tilt backwards together synchronously. You can lock the backrest at angles such as 95°, 115° or 130°, but not in isolation without the seat.
The supplier stated:
"The wheels are the same in all our chair styles.
We have received very few complaints about wheels scratching wood floors."
They could not provide the answer wether the chair hasa floor friendly rubber wheels as they do not hold that kind of info.
I am sorry. I have no further information.