15X8 Kosei Project...Feedback Appreciated

[A.J.]

Just ordered a set of 15x8 Kosei K1 Race from the TireRack. They only had them in Miata fitment with a 54mm centerbore and -35mm offset. I've ordered a set of 12mm spacers and plan on having the centerbores machined out to fit the e30/spacers...

Does anyone have any experience with having centerbores machined out? If so, any thoughts or advice would be appreciated. Also, anyone know a good shop in NorCal to have this done?

[rThor432]

It's a bummer that you can't just order these in direct fitment any more. Good luck.

[Philo]

Any machine shop should be able to do the work.

[FredK]

Is the centerbore custom to the Miata, or are they like other Koseis where hubcentric rings are used? I would think with 12mm spacers, you'd have enough room to just modify the spacer and not the wheel.

[Philo]

Good point. You should be able to get a spacer made for the job.

[A.J.]

Is the centerbore custom to the Miata, or are they like other Koseis where hubcentric rings are used? I would think with 12mm spacers, you'd have enough room to just modify the spacer and not the wheel.

They're custom to the Miata for SCCA STR Class...TireRack confirmed they have a 54mm centerbore.

[Ian F]

There's a forum member here - RobE30? - who can make spacers to fit a Miata wheel to a E30 hub.

[A.J.]

There's a forum member here - RobE30? - who can make spacers to fit a Miata wheel to a E30 hub.

I already ordered the spacers and I'd rather have the centerbores bored out to 57.1mm than go with custom spacers. Also the custom spacer guys are getting a lot of flack here lately (THIS: http://www.r3vlimited.com/board/showthread.php?t=205760 )

Any machine shop should be able to do the work.

Is this really true? I spoke with a shop in Oakland that has a special machine to turn wheels on...but hey, I'm no expert on machining...