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#81 260z.76

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Posted 17 February 2012 - 10:36 AM

Yes i did search and that is for a 240z with coilovers an not a 2+2 with stock suspention

#82 NZeder

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Posted 17 February 2012 - 10:59 AM

I have posted the answer in there before. Stock suspension max back space is approx 4.5" aka 8" rim with a 0 offset. The 0 offset on the rear of a 2 seater car (ie 240z, 260z 2 seater) requires either lots of negative camber and or guard rolling. The 2+2 have a little more room in the lip department so they should work (I say should as I have never owned a Bus aka 2+2)

So 8.5 +4 will work with coilovers and lip work as stated on that thread on hybridz - be it 240z or 260z 2 seater or 2+2 as 8.5 +4 = 4.9" backspace = will hit the spring perches on either 240z or 260z = game over for stock suspension forget about that lip/guards

My old red 240z had 16x9 -7 with stock 240z spring perches (not stock springs or inserts) and they worked with lip/guard work and a 225/45/15 type. However this same setup which as 4.7" of back space did not work on 260z with the lower front spring perches so I can say 100% that 4.5" works on the front of a 55mm strut (aka 260z strut) but the 4.7" does not that is how close it is. So at 4.9" game over .2" aka 5mm too much upfront.

These rims should work in the rear fine - it will be upfront you have issues. However you could run a stock 10mm spacer up front and it might work if the guards are rolled on the front.

However this is just by calcs so only why to know for sure is if someone has done it already.

#83 zzzzed

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Posted 17 February 2012 - 08:23 PM

Is it common with the Rota rbx that with the front rims, the center caps don't fit over the bering caps. ?

#84 NZeder

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Posted 17 February 2012 - 08:32 PM

Is it common with the Rota rbx that with the front rims, the center caps don't fit over the bering caps. ?

correct they don't :(

#85 zzzzed

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Posted 17 February 2012 - 08:49 PM

Oh cool. I feel normal again  :P

#86 260z.76

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Posted 17 February 2012 - 08:53 PM

Nzeder are you saying if i roll the guards and get 10mm
Spacers ill fit 8.5+4 will fit all round



#87 NZeder

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Posted 18 February 2012 - 10:39 AM

Nzeder are you saying if i roll the guards and get 10mm
Spacers ill fit 8.5+4 will fit all round

They might fit.....a 8.5 +4 with a 10mm spacer on the front of a 260z with rolled guards on the front is the same as a 8.5 -6 right. +4 and +10 space makes -6 (I know + + = - WTF - but a +4 is 4mm more inwards from so a 10mm spacer will effectively the same as a -6 offset rim)

So that in mind - there is a pic of my 260z with a stock spring perches (no springs block of wood to simulate fully compressed suspension) a 16x8.5 -6 and a 225/50/16 rubber. Now my front guard at this time had a bit of round tacked on to the lip and the lip was then bent around this wire to keep strength in the guard after this rolling.
Posted Image Posted Image

And the same rim on Dad's old S31 (aka 260z shell but actually a Fairlady Z with L20E power) - this car was stock suspension, guards you can see the rim is very close to the spring perch and a 8.5" -6 rim has 4.5" backspace so that is why I stay a 4.5" backspace is the max you can fit on a 260z with stock spring perches.
Posted Image Posted Image Posted Image Posted Image


#88 NZeder

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Posted 03 March 2012 - 11:57 AM

Well for us boys in NZ anyway...An order has gone up to Rota for  RK-R 15x8 +10 they will be in NZ in approx 8-9 weeks. So I will get pics then :D

Cheers
Mike

#89 d3c0y

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Posted 04 March 2012 - 09:17 PM

Sweet cant wait to see what they look like! What colour scheme did you get?

#90 NZeder

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Posted 05 March 2012 - 10:40 AM

Sweet cant wait to see what they look like! What colour scheme did you get?

Well as the min order is 40 items aka 10 sets of rims we kept the colour choice simple and either flat black or royal flat Gunmetal

Here is sample colours 15x8 ET0 aka +0 Offset shown.
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#91 Tj

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Posted 03 May 2012 - 08:51 PM

Is the RB available in a 15X9 in a negative offset such as -10 like the Shakotan is? Or do I need to go up to the 17" RBX?


#92 d3c0y

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Posted 03 May 2012 - 10:12 PM

Only the 17" RB-X

#93 Tj

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Posted 03 May 2012 - 11:02 PM

Thanks for that. Not a big issue, they don't seem to be any more difficult to fit and they don't look too dissimilar.
Did I read correct somewhere that there's an issue with them clearing the bearing cap on the front hubs?

#94 d3c0y

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Posted 03 May 2012 - 11:11 PM

that's only the clip in center caps that dont fit over the bearing covers. 17" tyres are cheaper and you can run bigger brakes too. If you want 15" Watanabe R-Type are the go they go well over 10" in that size.

#95 dat2kman

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Posted 03 May 2012 - 11:20 PM

Hmm, trawled back through the 7 pages on this thread,, umm,
Who can give me info on what they know or have seen of rims of an "older"style, ie Watas, Longchamps,  etc that are around a 15 x 10", yes 10" wide, with around a 0 offsett?

Reason, my Historic Datsun racecar, has the pissibility of being CAMS permitted to upgrade to a 15x10 and to runn full slicks.

I have thrown on some 15x10 with a Neg 26 offsett, the outer protrudes past flares unacceptably, and thete is not enough "meat" on the back side/hubface of the rim to pull it back the 25 to 30 mm it needs.

Who has seen what???


Other option is to go for three piece customs,,, pricey option for just a few meetings a year

#96 d3c0y

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Posted 03 May 2012 - 11:30 PM

Weird offset to be running on such a big wheel on a RWD offset car. I'll keep an eye out on yahoo auctions for you Jason.

#97 dat2kman

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Posted 03 May 2012 - 11:56 PM

Ta Jake, it's for the little red car with the wide flares.
Those 15 x10 Supalites you got from me, stuck out too far, they do a Chalkenger, same stick out, cant machine it back enuf.
If i can get a 0 or a slight plus say 10 or 15, i can play with slip ons, or machine backside a bit.

Currently the car is in up to 1969 CAMS spec, but i can now apply for up to 1981 spec, it ran the 10's in mid 1970's!
With the usual lw profile Dunlop/Avon slick

Four matching in 4 stud 114.3 datsun toyota etc

#98 Tj

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Posted 04 May 2012 - 06:25 AM

that's only the clip in center caps that dont fit over the bearing covers. 17" tyres are cheaper and you can run bigger brakes too. If you want 15" Watanabe R-Type are the go they go well over 10" in that size.


Oh cool. I must have misread that. Thanks for the clarification

#99 d3c0y

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Posted 04 May 2012 - 10:11 AM

Those 15 x10 Supalites you got from me, stuck out too far, they do a Chalkenger, same stick out, cant machine it back enuf.

Ha i havent bought any wheels from you  :o

#100 dat2kman

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Posted 04 May 2012 - 10:29 AM

Ha i havent bought any wheels from you  :o


My brain hurts, i thought about two year ago you did, or, someone from the Goldy did,  gggrrr, cant remember!

There is a user on secretdrift lives near me, got a pair of Rota Grids 15x8 0 offset in gold for sale at $300, just a pair name is savagenate, if anyone interested i could get rhem for you.
He also selling set of Longchamps 15x9 15x7 at $1600
What are these really rhat special?
If the Longchamps were around 600 the set, i'd grab them and get the 7" pair widened.




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