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New ML320 CDI Delivery - Check Tire Presures!!
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) |
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The 163s always had really high pressures "off the truck", probably due to the winching down they had to do on the car haulers. Some of the guys where I worked were really lazy on dropping the pressures down. They were sometimes so high it was easier to just pull the valve core out for a number of seconds to get them somewhat down to where they should be, then checking. Otherwise you were standing there a LONG time trying to just bleed the air out with a pressure gauge. I do remember a case just like you were talking about, tire pressures didn't seem to have been checked at all on PDI. Rock hard ride. And the PDI guy did a road test like that?
Gilly PS: Oh, but he DID drop the spare down to 32............(60 psi compact spare)
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Click here to see the items I have up for auction at EBay Click here to see a photo album of my '62 Sprite Project Moneypit (Now Sold) |
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Quote:
I have a hunch that all the tires were in the 36-38 psig range to help seat them properly on their new rims, too. I spent the big bucks for the P III package just to get the Airmatic Suspension. When I drove it home and tried the three different settings with no happiness in any of them, I was starting to wonder how much of a bath I would have to take in order to flip it.
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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) |
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