Super old thread, but since it is the same subject, I'll post on here instead of making new thread about it.
I have the 18x9.5+15 and 18x10+38 with no spacers on S14.
So, I went ahead and ordered this center caps in hopes that it'll fit.
http://www.ebay.com/itm/301051102149...84.m1423.l2649
And they do indeed fit very well on the wheel. I was a bit worried about the front because of the spacing of front bearing nut cover and the wheel, but it fits just fine. But I have SBC finish so silver and Honda symbol wasn't fitting right with me. So I went ahead and tried to replicate the so called SBC finish.
I sanded the caps down to plastic, sprayed it with silver, than used Duplicolor Shadow effects spray kit.
And well, I have tried this on chrome plastic before I did this, and after it was cured, it turned green, not remembering that I sprayed it anyways. This is how it looked right after I got done with the clear coat.
Looked decent, more like graphite finish than the "black chrome" i was going for. anyways, it turned green when it was cured. it looked too funny on the wheel and I had chrome vinal sheet laying around, intended for model air planes(super thin, strong, and light), and tried to cover the cap with that, but had trouble wrapping it around the sides of the cap. Plan failed, so I will just paint them gloss black with clear coat and put them on the wheel for the mean time.
How ever, I am not really digging the idea of plane black, I'd rather have chrome center cap so I went digging for different center caps on ebay and found few that I know will fit the wheel given the measurements were correct off the listings.
http://www.ebay.com/itm/181233037778...84.m1423.l2649
^that took a bit of digging to find with no casting lines from the ridges on the back side..
and also found this one.
http://www.ebay.com/itm/181331134022...S:1123&vxp=mtr
^now, I know it says BBS and all that, but I do like the over all shape and finish of the cap, so I sent the seller a msg asking if they sell exact same cap with no logo, if not how the "BBS" logo is put on the cap to see if the logo can be removed with out damaging the polished finish.
waiting to hear back from the seller on it.
Will update accordingly about the cap logo and when I put the current caps on the wheel after paint.