Originally Posted by Airdale
Changing to axles with heavier load capacities may make an owner feel more confident but it will not change anything else. Only the vehicle manufacturer or a certified vehicle modifier have the authority to change a vehicle's GVWR or GAWRs. So, your trailer's certification label still displays the correct values because the GAWR values as set by the vehicle manufacturer remain the same unless modified and re-certified.
Read what I said, "No I don't carry more stuff in my trailer now, I just have a reasonable margin of safety when it comes to the running gear."
The upgrade substantially reduces the probability of a failure on the highway, because the load bearing components are now running at 60% of their capacity vs 95% capacity as delivered from the manufacturer.
Yes the upgrade makes me feel more confident, with sound technical reasons for the confidence.
If the manufacturer had installed 5200# axles and appropriate tires and wheels, he could hardly have sold the trailer as 1/2 ton towable, that's my point.