BMW lease turn in

Will be turning in 2015 528i lease with about 25K miles. Unfortunately, run flat tires have to be replaced. Was thinking about buying used tires (exact same) before trade in. Do you know of any problem as long as there is enough tread, no sidewall repairs (may be other repair)… Also, lease is up in May. When can I expect lease turn in info & ‘ding o meter’? Thank you for your help.

No issues with used tires as long as the thread is above their min. I did that on another BMW lease close to turn in.

Ding o meter comes around 90 days prior to lease return.