Spacers can only be used with wheels that have cut-outs (facing the hub) to clear the stock studs. Please check as follows: Original stud length (i.e. 35mm) minus spacer-thickness (i.e. 25mm) = 10mm excess stud length. The cut-out should have a depth of 11mm.
Fits
Ford Focus RS 2016
Ford Focus RS 2017
Ford Focus RS 2018
Ford Focus ST 2013
Ford Focus ST 2014
Ford Focus ST 2015
Ford Focus ST 2016
Ford Focus ST 2017
Ford Focus ST 2018