I suggest you start a new topic on air suspension or simply add to one of the existing discussions such as http://www.ram1500diesel.com/forum/ram-1500-diesel-towing-hauling/33-airbags-ram-1500-diesel.html. Air suspension does not belong under the title, "rebates? 2500."I never order the 4 coil air suspension on my new truck. I was told it could be a problem as the truck gets older..cold weather etc..Anyone have good information on it.