2k3 maxima 17 inch rims...are they hub centric, or lug centric...what does this center bore crap mean?

 

If it's going on another Maxima you are hubcentric and ok. If it's not hubcentric then you'll get a wobble or vibration in the wheel like it is not balanced.

Hubcentric means the point of contact is around the hub. If its not hubcentric you are putting more force onto your wheel studs and tha can break them.