Rim Offset?

[Fuzion]

hey guys, im in the process of buying rims for my gsx and i am wonderng what rim offset is?
i see rims with like 40mm offset and i just can't find out what it means. tell me what kind of offset u guys got?
i want to get 18x8's and i'm running eibach pro-kits.
thanks a lot for the help
Fuzion-

 

[KRAZYKOREAN]

Well 40 or 42 offset for 18x8 will be perfect basically the offset means for example is how far the hub is from the outside lip of the rim..if you have a lower offset like +25 there will be more of a dish like a bigger lip and the hub its self will be deeper...the higher the number the hub it self is closer the edge of the wheel I hope this makes since how i am trying to explain it...

 

[igs]

Stock is 46 offset.