Spigot rings?

[DanPaul7]

So my new wheels arrived but i'm confused about one thing... spigot rings.
Are these really necessary? I plan on fitting some in a few days but I got the wrong ones sent with the wheel and don't want to have to wait ages for replacements.
I have heard that they aren't really necessary but I don't want to be on the M4 when I find out otherwise.

 

[JE_GT]

I use them lol, means they fit snugly to the hub rather than possibly being off centre and wobbling

 

[waitey]

So my new wheels arrived but i'm confused about one thing... spigot rings.
Are these really necessary? I plan on fitting some in a few days but I got the wrong ones sent with the wheel and don't want to have to wait ages for replacements.
I have heard that they aren't really necessary but I don't want to be on the M4 when I find out otherwise.

Fit them otherwise the wheel can move around and have serious effects, I would never drive a car with a larger centre bore size and no spigot rings to secure the fit.