Mercedes-Benz has sent us a 2009 ML320 BlueTEC and a 2009 GL320 BlueTEC to test drive for the next month. You might notice them on the road with their…distinctive wrapping. I went for a spin in the GL320 BlueTEC yesterday. I wanted to see how the 20″ run-flat tires impacted the ride quality. I was pleasantly surprised to find that the ride was as comfortable as it has ever been. I think Mercedes took great care to compensate for the run-flats with the suspension set up. Also, the 20″ size is not too big. It almost feels more suited to the size of the GL that the 18″ wheels did.

You can learn more at the Mercedes BlueTEC site or come in and see for yourself!