Originally Posted by bmorgan
Hub centric rings are manufactured so that when they are installed on a vehicle, the wheels are located directly off of the center flange of the brake drum or rotor. If the center bore of the aftermarket rim has a wider bore than the stock, this will assist with aligning the wheel properly prior to installing the wheel bolts. Hub centric spacers are designed to push the wheels out further from the rotor.
This is a ring:
This is a spacer:

Ok so this is what I think Ive got on my hands....Generic spacers on the back because they needed the clearence from the back rotors, No spacers on the front because ?????, I dont know why.
So now do I need
hubcentric rings on all
4 wheels; to align the spacers on the back and to align the (spacerless) front rim to hub? Or must there be spacers up front too?
Thanks for your help guys