HELP! hub size or center bore for EK9


doh

HONDA PINOY
Joined
Sep 17, 2008
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139
hello to everyone!

i hope someone could help me out. what would be the hub size of a CTR?

any help is greatly appreciated!

thanks in advance!
 
thanks blinx.always to the rescue.do i can put on wheel with 64-70 mm? would i need hub rings? well, as long as they fit right?

i wonder whats the spoon sw388 hub sizes are?are they uniform? i understand they have 15x6.5, 16x7,16,8 sizes, i suppose they have have the same hub sizes?or am i wrong?

thanks again!
 
Well i am not 100% sure so hopefully someone else will confirm but usually our cars do not need hubcentric rings because we use wheel studs and lug nuts. European cars are usually the ones that need Hubcentric rings because they use a lug/bolt to hold the wheel on like this:
 

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yup.gotcha.just in case that it may cause a bit of play/vibration on high speeds.

going back,logically,bigger hub wheels should go on the 56mm ek9 hubs.

cheers!
 
Just spoke to someone on another forum who said ITR is 64.1mm so I'm kinda confused now, now sure if CTR is the same.
 
Not sure if this is useful or not-

It's a cock up to make a wheel that doesn't really fit centre on the hub spigot. Hub centric wheels should have the studs or bolts ONLY in tension, holding the wheel on, the load path and centreing should be through the spigot over which the counter bore in the wheel should be a snug fit. Makers often bore a big hole in aftermarket rims and use a ring to bring it down in size. Sometimes they are evn plastic, often they don't get used, or get lost. Buy a rim that is made for the spigot size of the car, don't use adaptor rings. IMO.
written by a suspension track car set up specialist.

I m thinking of fitting these spoon wheels to my dc2 and the center bore is massive where as the slips that are on the car fit perfect but are much heavier and not as strong i guess.

Sorry this was abit random but I was searching if spoon made different center bore sizes for such a expensive wheel and saw this:)
 
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Not sure if this is useful or not-

It's a cock up to make a wheel that doesn't really fit centre on the hub spigot. Hub centric wheels should have the studs or bolts ONLY in tension, holding the wheel on, the load path and centreing should be through the spigot over which the counter bore in the wheel should be a snug fit. Makers often bore a big hole in aftermarket rims and use a ring to bring it down in size. Sometimes they are evn plastic, often they don't get used, or get lost. Buy a rim that is made for the spigot size of the car, don't use adaptor rings. IMO.
written by a suspension track car set up specialist.

I m thinking of fitting these spoon wheels to my dc2 and the center bore is massive where as the slips that are on the car fit perfect but are much heavier and not as strong i guess.

Sorry this was abit random but I was searching if spoon made different center bore sizes for such a expensive wheel and saw this:)

I'm sure having a completely 100% fitment is most ideal, but with the centerbore slightly bigger like they are on the Spoon wheels, I haven't seen any issues personally and Wai who races with the ex Super Taikyu car in Midwest Honda Challenge can also attest to this.

Supposedly, it causes premature wheel bearing failure and it may speed up the process, but thus far, it hasn't shown any detrimental effects on the road or on the track.

Just exercise the proper torquing procedure and be on your way.
 
thanks guys. i just wanted to make sure that my wheels will come on a ctr 5 lug hub. i measured the hub size this morning (they were both approx 70ish mm) so whether the ctr is 56 or 65, i think it should fit.

i love sw388s.one of the main reasons i fell in love with spoon.
 
I'm sure having a completely 100% fitment is most ideal, but with the centerbore slightly bigger like they are on the Spoon wheels, I haven't seen any issues personally and Wai who races with the ex Super Taikyu car in Midwest Honda Challenge can also attest to this.

Supposedly, it causes premature wheel bearing failure and it may speed up the process, but thus far, it hasn't shown any detrimental effects on the road or on the track.

Just exercise the proper torquing procedure and be on your way.

Sorry to hi jack this thread doh.

I was just trying to find out if anyone usesthe spoon wheels to race so thanks for the information racing angel. Does your friend run a metal spigot ring then?
 
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