Small bolt pattern to big bolt pattern

Hi Kim, the question is a little unclear. As Jeremiah says all 5x4.5" wheels are to be used with 1/2 studs and nuts? Which is what’s used on cars with 5x4.5 hubs and axles?

Why would/or what car do have that has 4.5"pattern that uses a 7/16” stud?

Beyond all that I’m pretty sure they both use a 60 degree conical nut, so if a 7/16" nut were used on wheels intended for 1/2" studs and nuts the 7/16 nuts would/should work but would be more deeply seated into the cone part of the wheel. You’d want to make sure there is enough contact made and also that the nut didn’t poke through the back side and touch the hub/axle preventing tightening all the way?