2018 Ram 2500

You sir are worse than dangerous. 

In at least 48 states it is illegal to surpass any rating on your vehicle. Some states it is a civil fine, while others it is a misdemeanor.  

The tow rating is usually the least important rating.  The most important ratings are:
1. Cargo capacity

2. Gross Combined Vehicle Rating (GCVR), which includes the towed vehicle.

3. Axel ratings

4. Hitch rating

The GCVR and axel ratings are printed on tags. For the tow vehicle they are in the drivers side door jam. Sometimes they include the Cargo capacity, other times you must calculate it using the Gross Vehicle Weight Rating minus the vehicle curb weight. You can not go online to find these vehicles (except maybe a VIN search at the manufacturers website). Most RV trailers have their tags either near the pin box, the hitch receiver, or sometimes on the drivers side front of the trailer.

There is only one way to get the ratings changed, you must pay to get a new certification, which is not cheap.

Adding air bags, better shocks, better springs and other improvements may make the vehicle handle better, but they do not officially change the vehicle's official rating.

The fines for exceeding the weight can be relatively low (about $200) to several thousand dollars. If it is a misdemeanor you can face jail time (up to a year), community service, etc.

Things really change if you are involved in an accident. You could be found automatically "at fault". Some states may even charge you with manslaughter if someone dies. You may be responsible for injuries and property damages. Some insurance companies will deny claims if you are found "at fault" for an accident due to an overloaded vehicle.