No matter what the size your spacer amount needs to be what ever the outer edge is retracted by like your above numbers say outer edge retracted by 23mm so a 23mm spacer is needed or something close to make it stock offset. you wont be able to use just any spacer buy ones specifically for mercedes or hub centric spacers the centric OD is 66.56 or 66.6 you will see what i mean when you take your stock wheels off and or look up a centric spacer