Originally Posted by Kenny kustom
Mine are rated at 3520.
X4 is 1480.
Rig is 15500 gross.
I guess they are relying on the extra on the pin.
No good in my books.
They're also relying on equal weight on each tire. This isn't true, it's the one tire with the greatest load that needs to be considered.
No matter how hard you try to balance your trailer, tire loads will not be equal. This starts with the weight of slide outs (with couch) on one side and not on the other.
In my case with rubber torsion axles, I doubt the axle forces will be equal even if trailer loading were perfect. Rubber doesn't make an ideal spring. Each half axle will have a slightly different load for a given deflection. It's just a question of how much they're different.
And what happens if one tire is 2psi high and the others are 2 psi low? I bet it will take more of the load.
The 20% rule makes good sense when you think about all the variables that can unbalance the tire loading.