I recently sold my E320 Cabriolet and bought this from a friend. It's a 1987 Mercedes Benz 300D Turbo. It has 190k miles, extensive records, leather interior(blue), and it runs great.
I have three sets of wheels/tires for it. One set is a set of light weight CLK wheels, which weigh 11 lbs each. I am considering keeping those(kept them from my cabrio) and running those with a 205/etc/16 tire.
I do have a weird noise coming from the belt and I need to figure it out since it is an annoyance. As well as replace the lower ball joints (doing that in a week).
Other than that I love the car and my first tank (15 gallons) lasted 7 days and netted me 490 miles between fill ups. 32.6 mpg.. Not bad for a 24 year old luxury car!