What are these?

[t0m]

Hi, excuse my ignorance but I just cracked off the bubble wrap on my new wheels and found the bag with the bolts in, I understand that far. But what are these alien little black plastic things that came with it. After a bit of male intuition and fiddling I realise they fit exactly into the back of the wheel, where it touched the hub I'm guessing.

Can anyone confirm their purpose or something? Cheers: pics..

 

[Middo]

yeah, they go into the back of the alloy to fit the hub

 

[GarethM]

they are little wheel spacers to fit on the back of the alloys incase the hub is slightly too small.
on the reverse side of the alloys there should be a groove for them to sit in

 

[bunzee]

Spigot rings

And my last plastic set disintegrated.

 

[V1NNY]

yep spiggot rings, metal ones are the best

 

[kully]

yeah, they go into the back of the alloy to fit the hub

me think that 2

 

[t0m]

Do they need to be fitted whatever or are they just an option?

 

[KyleB]

i'd advise fitting them personally, think the wheel sits better.

but i might be wrong

 

[bunzee]

On my old car I didn't fit them to begin with and it felt like the wheels weren't balanced - was perfect once the spigots were on

 

[Batman]

i think someones just bought a set of bk racing wheels *notices the tuner bolts* they better not be 17" bk333's in blk and chrome or i will come and have your car towed away coz i havent got to show mine off on here yet

 

[t0m]

Ah yeah, now you come to mention it, why did I get a set of 4 bolts and seperate key even though I've got enough loose bolts in the bag? Batman can you shed any light?