Originally Posted by lbrjet
For example adding the $150 camper package to a F250 adds a leaf to the rear and the GVWR is raised 800 lbs. Same everything else on the truck. An air bag would accomplish the same thing as the extra spring. Maybe I'm missing something on why this would be dangerous.
lbrejet, I did not specifically mention you as I have seen this "air bag/helper spring" argument presented before. Well, let me try to answer this in a way you might find reasonable.
1) GVWR is a number that includes any dealer installed options and is on the label and is accurate. Nothing you can buy and "add on" will increase your GVWR.
2) Airbags and user installed helper springs DO NOT change that label. They are ride levelers only. You have no way of knowing for sure when the "upper limit" for the frame has been reached. So your statement that air bags do the same thing as helper springs" is correct. Neither do anything to raise the GVW of your truck.
The newer GM trucks are an excellent example. The 2010 and the 2008 line of 2500HD trucks are identical in construction; EXCEPT; the 2010 and later trucks have a FULL BOX frame instead of the C Beam frame of the earlier 2500HDs. That one change resulted in an additional 900 pounds to the max GVW (from 9200 pounds to 10,100 pounds).
Your comment about "same as everything else on the truck" also is suspect, since you have no way of knowing what else has been changed as a result of the $150.00 camper option. A second "House Battery" and wiring is an example of what may have been part of the modification. Again, that weight was included in the sticker max GVW.
That "extra leaf" may be an entire new heavier duty stiffer spring that may also have included heavier duty shackles and attachment hardware; harder mounting bolts and possibly welded stiffener plates for truck mounted camper duty.
Now you see why ignoring the max stated GVW of your TV is "dangerous? Hope this helps.