I just took delivery of a 2007 ML320CDI yesterday with Airmatic suspension. No matter which of the three settings I tried, the ride was not at all good - harsh, uncontrolled, rolling like a ship at sea. I was not at all happy.

This AM I checked the tire pressures, and they were way off. Rear was at 36-37 psig and they're supposed to be 38 or 39. Fronts were 37-38 psig and they're supposed to be 32.

Fixed the pressures to what they're supposed to be; and viola, I had a new car. The ride is now fine in all settings.

You would think that the dealer prep guys would have checked this. Obviously, not!

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1973 280SE 4.5 (Sold)
1984 LWB 280GE (Sold)
2000 G500 NMLE - "Deep Throat"
2007 ML320 CDI (Sold)
2010 Porsche Cayenne S Transsyberia TipTronic (Sold)
2010 Audi Q7 3.0 TDI (Sold and Sorely Missed)
2014 ML350 BTC
2015 Audi Q7 3.0 TDI (On Order)