I am looking at new wheels. Apparently you need to get hub centric rings to prevent wobbling (snug fit). If I am planning to use spacers that are hubcentric, there really isn't a need for rings right?

 

The spacers just extend. You'd still have 66.1 or whatever it is on the spacers

 

With or without spacers, you will still need the hubcentric rings on your wheels.

 

These are dead on. ^^^

Only way you'll NOT need the hub rings is if the wheel has 66.1mm hub holes - like OE wheels. Very few aftermarket will have that diameter. Most are 72.6 or 73.1 to fit many 5x114.3 PCD cars.