Wouldn't the best way to measure this be to measure from the door sill to the top of the roof? Or from the floorboard to the headliner? This way tires, rims, suspension, unlevel ground etc. wouldn't play any role. Just a thought.

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'86 420SE Euro
904 Midnight Blue, Gray Velour
Dad bought it new, now I own it.

"A Mercedes-Benz is like a fine wine, it only gets better with age."