I think no, they say it increases clearence to 19s
https://www.racingbrake.com/RB-Rotor...bmw-irp-04.htm
Also logically speaking an inch is 25.4mm, the disk is 20mm smaller (diameter to diameter), so a disc decrease of 20mm should not be enough to clear an "extra" inch of wheel.
Could be possible if the caliper was lower profile but that ain't the 2NH caliper's strong suit :/
BUT maybe RB brake kit + Apex forged wheels would clear?