It really comes down to simple geometry. I would like to see a little graphic, but you can take a look and think about the force that the wheel puts on the suspension and how the suspension reacts.

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Past mb: '73 450sl, '81 280slc stick, '71 250, '72 250c, '70 250c, '79 280sl, '73 450sl, parted: '75 240d stick, '69 280s, '73 450slc, '72 450sl,