[kkuntz01]

Depending on the weight of the BFG it may not may not be noticeable, height is likely a negligible difference.

Now what is the load range on those BFG's? For some reason I'm thinking they're a load range E but I could be mistaken.

 

[kkuntz01]

Opinions may very, but unless you have a VERY heavily built and armored JK Load Range E tires will be overkill and you'll hate the ride because of how stiff the sidewalls are.

Even for the half ton Chevy I think I'd the same things apply. Sure you'll have s strong side wall, but are you willing to negatively compromise ride quality for something that may not be an issue.

You should be fine with just stand tire on either of your vehicles.