Rim spacers? inserts?

[YBLEGAL]

Hello everybody, long time no post.

Anyway, I'm putting my rims back on (took 'em off for the winter), and I'm noticing these little blue rings. They're made of aluminum, and basicly they go inbetween the wheel hub and the rim. It's not a conversion from 4 to 5 lug, it doesn't even make my rims stick out, it's like it's a filler for an otherwise empty hole between my rim and wheel hub. Any idea if I NEED these? I lost one over these past months...

Thanks guys

 

[TurboMirage]

those are hubcentric rings. as long as you tighten your lugnuts evenly, you will be fine.

 

[YBLEGAL]

Good deal. Yup, I follow the rule, always cross tighten. Thanks