Where to get set screws

[moe30]

So we put suspension on my car Monday. When we pulled it apart I noticed that one of my set screws on my rotors was trashed and one was completely missing.

Will I have to go through an actual bmw dealership? Also the one that is missing one is it something where is needs to be replaced asap?

[jlevie]

The rotor retains screws are not essential. Their only purpose is to hold the rotor in position when the wheel is off. I get them from a dealer and they aren't expensive. I'm sure one of the on-line parts houses will have them.

[SpecM]

I don't use them, it just makes lineing the wheel back up with the rotor/hub easier