I found these ( Click Me )and I read the FAQ about breaking the studs. It makes sense to me about the centerline staying the same since these are bolt on spacers and not slip on spacers. Has anyone tried these? Should I stay away from these all together.

 

Why would you need them? They will push your tire/wheel out which will cause fitment problems and increase wear on suspension and steering components.

 

I was more curious about the stock backspacing in relation to adding a 1" spacer. With that, what would be the difference in buying rims with that backspacing already? Would it still have the same negative effect on the suspension and other parts?

 

Yes, rims with less backspacing have the same effect.