Work equips question (pardon the n00bness)

[BMW-UDM]

Hey folks
had a few quick r00kie questions abt work equips.

1) Are they hub centric?
2) Where can i find replacement lips?

looking to get a step lip if i decide to get set

[IMG][/IMG]

^^^^^^^
just an example pic

mine would be 18"...and WIIIDE

Any info would be greatly appreciated!

BTW this would be going on a BMW E46 and the equips would (of course) be the proper bolt pattern

Thanks,
Cesar

[Zic]

If they are hub centric? Depends if you buy a set with the same bore, and about the lips. I dont know.

[BMW-UDM]

^ our bores our 72.5mm correct? if i test fit them and they go on real real snug to the center bore then it would possibly mean a hub ring is not required? i would have to measure i know, but i was just curious.. thanks!