When we upgraded our axles at MORryde the shop manager told me that people who believe they can haul more if they increase the axle weight rating are mistaken.
Example: If you increase your axle capacity from 7K to 8K. The GVWR will not increase if a heavier duty axle is added. To quote him “The GVWR is the GVWR!” His additional comment was, “The frame’s capacity is fixed and it does not matter how big your axle is!”
As I read various blogs, posts, etc., people believe they can haul more weight if they increase the axle capacity. The other thing that I do not understand is why people do not weigh their RV. I weighed our truck and 5th wheel early on in our adventure, and we were way over weight! Setting up an account with CAT Scales is simple and easy. —Chuck
You are correct. You cannot upgrade the Gross Vehicle Weight Rating by adding new, heavier axles, as some people think. Actually, owners need to weigh their rigs by individual wheel position vs. a CAT Scale, as it is not uncommon for rigs to have more weight on one tire, or on one side, than the other.
The RV Safety & Education Foundation has teams that will weigh at rallies and such. Some dealers are now purchasing scales, as well. A CAT Scale is OK to find overall weight so they don’t go over GVWR, if they can’t find a RVSEF weighing team. And you do not have to weigh the rig every time you take a trip—unless you pack substantially heavier items.
So I don’t know that setting up an account with CAT Scale does much good. That’s more for over-the-road truckers that have a different load almost every time they hit the road. They need to weigh and have a record of it. Once a year is typically good just to verify nobody put 2,000 pounds of rocks in and forgot to tell you.
Do you have a question for Dave? Leave it here.