Spring Capacity

The vehicle's cargo GVWR / cargo rating is essentially what the factory springs are rated for to maintain "safe" operation. I think on the Wildtrak is somewhere around 1000 lbs cargo, but check the sticker on your door jam.

If you go beyond that, then yeah you'll have to start considering suspension upgrades.

2022 Ford Bronco Tech Specs

Here's a link to the Bronco Tech Specs for just about anything you want/need to know.

Something else to know is this applies to all vehicles, not just 4x4 vehicles or Broncos. If you drive a Honda Civic, the GVWR might be 3,900 lbs (just a WAG), so the total cargo including passengers would be about 1,000 lbs. If you overload your Civic, it won't perform as designed, just like the Bronco, or the Wrangler, or the Carerra.

You can never increase the vehicle GVWR, but most people don't care. You can buy springs rated to carry heavier weight, and it will, but it won't ever increase the GVWR.

I like to know what tire size will be used, the weight or load, and then choose springs to carry that load at a height that allows room for that tire. So, if you load up your rig and it "squats" two inches and the tires rub, I would look to lift it a maximum of two inches; to the point it doesn't rub, or only rubs a minor amount. I'm not afraid of the rub, if it's not catching on parts, so I would always choose to lift it the minimum amount necessary to clear the tires I want to run, carrying the weight I need to carry.