Back in 1988, BMW decided to chop off the roof of a BMW M3. Unthinkable at that time, the decision turned out to be a good one for Bimmer because 30 years later, it’s actually celebrating that decision with the launch of the BMW M4 Convertible Edition 30 Jahre. The M4 Convertible 30 Jahre follows a long line of models that have been given the “Jahre” treatment. For those who don’t know, “Jahre” is a German word that means “years” in English. In BMW’s case, it’s made a habit of releasing special editions of models celebrating their 30th anniversary, or as it likes to call them, 30 Jahre. The M5 got one in 2014. The M6 got one in 2016. Most recently, the 7 Series got the 30 Jahre treatment last year. Now it’s the BMW M4 Convertible’s turn, which itself is odd because the 4 Series didn’t come to existence until 2013 when it was packaged as the coupé and convertible versions of the 3 Series. Follow that thought, and you’ll realize that the M4 Convertible Edition 30 Jahre is actually a 30th-anniversary tribute to the M3 Convertible.