wreckdiver1321
Overlander
Here's my personal take on the matter...
You've done quite a bit to upgrade the suspension and brakes, which will be what will be most affected by the additional weight. The frame and hard suspension parts (a-arms, etc.) aren't taking the strain as much as the springs and shocks do. Because you've upgraded, those parts can now handle the load you're putting on them. An extra 300 lbs won't really make that much of a difference when distributed amongst the four corners of the truck.
One other thing to take into account is the world we live in. The US is a very... litigious society. People here like to sue other people. A lot. So when it comes to weight rating a vehicle, the manufacturers add a pretty healthy safety margin to cover their asses, generally around 20% or so before things become dangerous. By exceeding the GVWR 300 lbs in a truck that is rated for 5300 lbs, you are exceeding this maximum weight limit with a built in safety margin by... six percent. To me, that falls into the realm of acceptable as long as the vehicle still "feels" right on the road.
You've done quite a bit to upgrade the suspension and brakes, which will be what will be most affected by the additional weight. The frame and hard suspension parts (a-arms, etc.) aren't taking the strain as much as the springs and shocks do. Because you've upgraded, those parts can now handle the load you're putting on them. An extra 300 lbs won't really make that much of a difference when distributed amongst the four corners of the truck.
One other thing to take into account is the world we live in. The US is a very... litigious society. People here like to sue other people. A lot. So when it comes to weight rating a vehicle, the manufacturers add a pretty healthy safety margin to cover their asses, generally around 20% or so before things become dangerous. By exceeding the GVWR 300 lbs in a truck that is rated for 5300 lbs, you are exceeding this maximum weight limit with a built in safety margin by... six percent. To me, that falls into the realm of acceptable as long as the vehicle still "feels" right on the road.