Ok. I need help from you guys.
I have ordered new wheels last week and shop was installing it yesterday,
and they called me up that wheelwouldn't fit perfectly with that part on the picture.(btw thanks for the picture DYHPPY)
So i went there to take a look at, and basically center of the wheel where suppose to rest on that part on the picture wasn't in same size, and he said spacer was needed to get a perfect fit. He said right now wheel is held off by only bolts and eventually it will break off if i leave it like that.

Is it true? and i have to drive home (i'm at school now) at current condition, and afraid wheel to fall off.
What do i need to do? I called tirerack(where i ordered my wheels from) to confirm if they forgot to send spacer that was required. But i haven't had a call back and it's about time for me to go home and i was just wondering if i should drive home.

And last question, was there any size change of that part on the picture from MY03 to MY4? Because if there was, shop may replaced that part with wrong year model
while they were fixing my car.

Thanks in advance.

-jung

 

sounds like u may need hub centric rings

 

so that thing's name is hub?

 

I call it the wheel hub center. What he's talking about are rim centering rings. Some cars need them. Some don't. Many S2000s have aftermarket rims without these rings and they work fine.

 

Oh, so gap between wheel hub center and center part of rim is ok???

Because it looks like that plastic piece came with rim is a rim centering ring,
but they are too thin to do any job ( in newbie's opinion )

And what does that ring do anyways?

Lastly, did size of wheel hub center changed from MY3 to MY4?
(just trying to educate myself into this car thing)

Thanks a lot

 

It would "seem" that it is OK for S2000s. For example with my daughter's Mustang, aftermarket rims without centering rings is not OK. A vibrations starts up at speed.

Realize that for an S2000, you must have 2 different sizes of centering rings because the front hub centers are a different diameter than the rear hub centers. I believe the fronts are larger than the rears centers. Therefore, since the rim holes are likely the same for aftermarket stuff, the rings for the front rim needs to be the skinny thin ones and the rings for the rears need to be the thicker fat ones. If you reversed these, it won't look right and it won't work, either.

Sorry, I don't know if the diameters of the hub centers changed from AP1 to AP2. I somehow doubt it as OEM rims from one car will interchange with the other.

 

What is really going to locate your wheel in most cases is the lug nut seats. When the lugs go into their seats, the wheel will be locked in place, and friction between the hub and the wheel keeps the wheel from moving around.

If there is slop in the lug nut seats, then the wheel might not be located in the same place every time it is installed. In this case, a hubcentric ring could help make sure the wheel is correctly located on the hub.

 

Bah. Poseurs all. You found the power O ring, engineered into the hub assembly to minimize vibration and guarantee your engine revs as high as possible, thus generating maximum power. Remove it and you instantly lose 25 HP. Yeah, that's the ticket.

 

Thanks guys