Thanks for the tip. I try to remember to put the top up when the car is parked in the garage, but my wife leaves it down most of the time. I'll get her to quit doing this.

The previous owner must have done the same, since we ended up having to replace the rear window when it cracked across the middle.

The previous owner of a Jag convertible I used to own did the same thing...but the rear window is glass. However, the top material deteriorated along the hinge points...a classic example of leaving the top down for extended periods.

Haven't seen the same kind of wear on the MB tops...superior German quality, I guess, since VW convertible tops are nearly as durable.

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2009 ML350 (106K) - Family vehicle
2001 CLK430 Cabriolet (80K) - Wife's car
2005 BMW 645CI (138K) - My daily driver
2016 Mustang (32K) - Daughter's car