I'm thinking about setting up my own home gym. And since

If you're buying new, most sites will probably state the max load.

Those bars will guaranteed not safely support 4plate

>>39500866
They'll bend before they break. I have cheapo warehouse store barbell and have had well over 3 pl8 on it.

The limitation is space for plates more than Bar tolerance.

Somethings to consider: Thinner bars are springier for the squat. This can be bad.

The smaller grip will mean you don't train grip quite as much.

That said though I find that squats are much harder with the thinner bar and i get satisfying results from less weight anyway.

>>39500866
get a bar with a spear installed

>>39500895
Also loading up weight and lifting it without it snapping =/= it is safe and won't snap in the future