I just got my gramlights in and it only came with 2 hub rings. Do i need 4 or only 2. If 2 only, does it go on the front or the back???

 

You need a set of four.

 

What is the purpose of the hubcentric rings? What happens if they are not installed on the wheels?

 

bump....i want to know too?

 

First of all, it helps line up the lug holes, so the lugs can go on straight without you having to support the weight of the wheel, and line things up while you try and screw in the lugs.

Second, it helps support the weight of the car on the wheels. I'm not a wheel expert, but this is what I've been told, and it makes some sense. The stock wheels fit perfectly on the hub. It only makes sense that when the car is on the ground, the hub will be taking some of the force of gravity (3K+ lbs), as well as the lugs. No hubcentric rings, and the lugs have to take the full responsibility.

 

ahh....ty!!

 

What would be the dimension of hub centric rings for the stock Enkie's?