How to calculate load on suspension mounts?

Based on my question I'm obviously not a mechanical engineer. In the past I've use formulas from the machinery's handbook for calculating the strength of materials. I haven't died yet so I haven't completely failed. Or maybe my safety factor is just really high. I have also done quite a bit with CAD and FEA but I still dont know How much load my parts should be able to take.

For argument sake, let use a Tacoma. Let's say I was designing rear suspension mounts. How would I calculate the load being placed on it?

 

https://ntslogistics.com/glossary/meaning-of-gross-vehicle-weight-rating/

Don't exceed, or exceed minimally and everything is fine. Folks will talk about big boy spring/shock upgrades and how much they haul, but GVWR includes frame and driveline abilities too.

If you want to know static weight per corner, corner weighting scales (see a race shop or SCCA friend) will do that just fine, but you'd have to calculate and subtract unsprung weight to approximate fixture weight. Which really shouldn't matter if you don't exceed the GVWR

Corner weighting can help you make sure there is some balance in the loaded vehicle if that is a goal.

 

Keep looking in your machinery handbook the formulas are in there to calculate what you want.

Rule of thumb 1/8" over stock thickness on material will be more then able to handle what your going to see as far as weight.

After all suspension mounts just for the most hold things in place.