Will these work on my wheels?

Check your wheel's lug hole diameter and thread pitch first. These are M14 x 1.5 metric threads — if your wheel accepts that size, you're good. Spike diameter (23mm) and height (112mm) are visual specs; confirm fitment with your wheel manufacturer if you're unsure.

Do I need to prep or paint these before installing?

Black steel comes ready to install as-is. If you want to repaint or customize the finish, basic surface prep and spray paint work. Nothing special required for immediate use straight from the box.

What if one nut gets stripped or damaged?

You've got 24 in the set, so you have spares for all four wheels plus extras. If you lose or damage one after install, you can source a replacement M14 x 1.5 spike nut from any aftermarket supplier — the thread is standard metric.