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Need help with application of hubcentric spacers on aftermarket wheels.

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Old 08-27-13, 09:24 PM
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Need help with application of hubcentric spacers on aftermarket wheels.

So I've been researching wheel spacers and what size to get and everything and I've come to a problem that's got me confused as to what to do.

Here's what's going on... I've got aftermarket wheels with a 72.6mm center bore according to information online, the stock wheel hub bore is 59.5mm.

So now I have two different sizes here and the hubcentric spacer size I would be getting is a 59.5mm , what should I be getting to make everything fit properly ?

I was assuming I'd need custom hub rings that goto 72.6mm to 59.5mm , but will that work with the spacers for 59.5mm ?

I do know that the the wheels don't have to be hub centric, they can be be centered by just the lugs alone, but I just figured it's better to have them than not have them.

Can anyone help ? For reference, I am running Motegi FF7's , 18x7.5 , +45 offset , was going to get 35mm spacers which would put me at +10 offset
Old 08-27-13, 11:39 PM
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first, why are you running so high of an offset?

second, yes, if your spacers are hub centric they'll have a 59.5mm lip on the wheel side that the hubcentric ring will fit over.

or you can get spacers from a place like motorsport-tech.com that are 59.5mm on the inside and 72.6mm on the outside.
Old 08-28-13, 09:39 AM
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Originally Posted by eage8
first, why are you running so high of an offset?

second, yes, if your spacers are hub centric they'll have a 59.5mm lip on the wheel side that the hubcentric ring will fit over.

or you can get spacers from a place like motorsport-tech.com that are 59.5mm on the inside and 72.6mm on the outside.
I got them for a price I couldnt pass up, getting these meant I could use aftermarket wheels instead of using the stock wheels because I needed new tires



Need help with application of hubcentric spacers on aftermarket wheels.-forumrunner_20130828_103853.jpg

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Old 08-28-13, 10:10 AM
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Well I checked out that site and I can't find a way to make spacers for our rx7s because it doesn't list our on the list for cars they can make spacers for.

Where do I go on there to find what I need ? I can't seem to find it.

If I were to get hubcentric spacers with a 59.5mm center bore, would I be able to get a custom hub centric ring for my wheels to make them slip over ?

Sorry for all the questions, just new to doing all this and want to do it right the first time.

These are the spacers I was looking at. http://www.ebay.com/itm/OEM-HUB-CENTRIC-PNP-35MM-WHEEL-SPACER-ADAPTERS-5X114-3-CB-59-5MM-12X1-5-/140909846155?pt=Motors_Car_Truck_Parts_Accessories&fits=Model%3ARX-7&hash=item20cee19e8b&vxp=mtr

Edit - I think I answered my own question, it says on the bottom of the ad " you may need a wheel ring if your aftermarket center bore is bigger than your oem center bore"

Now to figure out who can make custom size wheel rings, because I can't find anything that goes from 72.6 to 59.5

this is the closest i could find on ebay.

http://www.ebay.com/itm/Hub-Centric-Rings-OD-72-6mm-ID-59-6mm-Aluminium-Alloy-/200826876666?pt=AU_Car_Parts_Accessories&hash=item2ec236f2fa&vxp=mtr
Old 08-29-13, 10:15 AM
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Sorry, by high offset I meant low offset.... most rx7 guys run wheels in the +25 range. 7.5" wheels are pretty skinny though.

my 17x9 +25s barely fit up front with rolled fenders and -3.5* of camber

9-7.5/2= .75" further in or 19mm

+25-19=6mm.... so you might be ok with +10s but don't run tires too big and make sure your have camber plates...


back to the spacers
just put it "1989 mazda 929" and all the measurements are the same.

also, don't get ebay brand bolt on spacers... I've seen them break in half before. This is a pretty critical part of you car with a lot of force going through it.
Old 08-29-13, 10:19 AM
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Originally Posted by wthdidusay82
Well I checked out that site and I can't find a way to make spacers for our rx7s because it doesn't list our on the list for cars they can make spacers for.

Where do I go on there to find what I need ? I can't seem to find it.

If I were to get hubcentric spacers with a 59.5mm center bore, would I be able to get a custom hub centric ring for my wheels to make them slip over ?
If you go to motorsport-tech site go to custom wheel adapters:
Wheel Adapters, Wheel Spacers, Hub Centric Rings | Motorsport Tech

they can make you a set that is 59.5 on the hub side and 72.6 on the wheel side so you don't need rings.
Old 08-29-13, 10:28 AM
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maybe you should resell those wheels and buy something that fits better?
Old 08-29-13, 12:34 PM
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Originally Posted by j9fd3s
maybe you should resell those wheels and buy something that fits better?
They fit fine, just rather the sit more flush.

it might seem like I have alot of money from all the mods I've done but its an illusion, I could barely afford the wheels I'm using now

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Old 08-29-13, 12:41 PM
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Originally Posted by eage8
Sorry, by high offset I meant low offset.... most rx7 guys run wheels in the +25 range. 7.5" wheels are pretty skinny though.

my 17x9 +25s barely fit up front with rolled fenders and -3.5* of camber

9-7.5/2= .75" further in or 19mm

+25-19=6mm.... so you might be ok with +10s but don't run tires too big and make sure your have camber plates...

back to the spacers
just put it "1989 mazda 929" and all the measurements are the same.

also, don't get ebay brand bolt on spacers... I've seen them break in half before. This is a pretty critical part of you car with a lot of force going through it.
I'm confused to how you did the math to all that, the way I did mine was some info on fc3s pro.

I figure if my offset is +45 now and minimum offset I can.do is +10 a 35m spacer would give me that.

I might not mess with using spacers for a while, if its gonna cost a bunch of money.

I should probably at least get the wheel.rings though so my wheels slip on the hub , idk.....it.didn't look like the center bore was way bigger.when I put them on but that's not what the site says.

edit - my friend who works at a shop said all spacers are the same so just get cheap ones, I honestly didn't think they were expensive.to make

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Old 08-29-13, 12:49 PM
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I just got custom hub and wheel-centric spacers from them and can say that they are way better than cheap pot-metal spacers. They fit both the wheel and hub perfectly and have ZERO vibration due to ill-fitting non-centric spacers. $90 shipped for a pair of high-quality machined spacers is NOT too much to ask.

fm
Old 08-29-13, 01:04 PM
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Originally Posted by Fungus Mungus
I just got custom hub and wheel-centric spacers from them and can say that they are way better than cheap pot-metal spacers. They fit both the wheel and hub perfectly and have ZERO vibration due to ill-fitting non-centric spacers. $90 shipped for a pair of high-quality machined spacers is NOT too much to ask.

fm
how big?problem I have is I'm using stock length wheel studs so I was gonna get bolt on hub centric ones, what did u get

u had to.order yours as Mazda 929? wish they just put.rx7 on the list

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Old 08-29-13, 02:16 PM
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I have a set of 30mm bolt ons for my street wheels, and 10mm slip ons for my racing slicks (the wheel offsets are different)

I wanted to be able to use them with different wheels in the future, so I got them with hub centric rings. I ran the 30mm bolt ons without the rings and the steering wheel would shake a lot on the highway. installed the rings and now they're completely fine.

and no, your friend is wrong. the entire weight of your car is sitting solely on the material of the bolt on spacers... different alloys of aluminum have vastly different properties.

worst case scenario at least get ichiba v2s (from j-auto.net), and some hubcentric rings... but they end up being just as much as motorsport-techs and aren't as nice.
Old 08-29-13, 02:39 PM
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Originally Posted by eage8
I have a set of 30mm bolt ons for my street wheels, and 10mm slip ons for my racing slicks (the wheel offsets are different)

I wanted to be able to use them with different wheels in the future, so I got them with hub centric rings. I ran the 30mm bolt ons without the rings and the steering wheel would shake a lot on the highway. installed the rings and now they're completely fine.

and no, your friend is wrong. the entire weight of your car is sitting solely on the material of the bolt on spacers... different alloys of aluminum have vastly different properties.

worst case scenario at least get ichiba v2s (from j-auto.net), and some hubcentric rings... but they end up being just as much as motorsport-techs and aren't as nice.
thanks for the advice, I always do.research before buying something

now I'm trying to figure out if 35mmi is the size I should get.

+45 minus 35 is 10 , I want it flush with the wheel well and fc3s pro says with 7.5" wide +10 offset is the minimum u can do and recommend is +30

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Old 08-29-13, 08:45 PM
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Originally Posted by wthdidusay82
thanks for the advice, I always do.research before buying something

now I'm trying to figure out if 35mmi is the size I should get.

+45 minus 35 is 10 , I want it flush with the wheel well and fc3s pro says with 7.5" wide +10 offset is the minimum u can do and recommend is +30

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Sell those and buy wheels that fit and are wider before you spend $300 on hub centric bolt on spacers....

I run 17x9 mustang cobra wheels with no spacers. I paid $150 for them and bought used tires to keep them on the cheap.
Any '94-'04 mustang wheels will fit within reason,if you're on lowering springs instead of coils I would run some OE 17X8's with the lowest possible offset. The car will handle much better than having the heavy 18's.
BAM: they're cheap
http://fredericksburg.craigslist.org...032153671.html

http://washingtondc.craigslist.org/n...028880043.html
Old 08-29-13, 10:08 PM
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Originally Posted by Molotovman

Sell those and buy wheels that fit and are wider before you spend $300 on hub centric bolt on spacers....

I run 17x9 mustang cobra wheels with no spacers. I paid $150 for them and bought used tires to keep them on the cheap.
Any '94-'04 mustang wheels will fit within reason,if you're on lowering springs instead of coils I would run some OE 17X8's with the lowest possible offset. The car will handle much better than having the heavy 18's.
BAM: they're cheap
http://fredericksburg.craigslist.org...032153671.html

http://washingtondc.craigslist.org/n...028880043.html
Im not switching wheels, I appreciate the advice but I like my wheels and I don't mind paying to.keep them and get spacers.

here's the story -

My car when purchased came with two spares and two.mismatching 87 Turbo wheels one gray one polished...

So I bough stock polished wheels for 200 and.turned out.the tires all need replaced.

So now instead of paying $500 for new tires , I decided to buy these wheels , there went another $400 which these turned out having two bad tires which I replaced, there went another $240.

So now I just want some spacers so they'll fit better, they don't rub or anything its just a cosmetic/aesthetic thing , im not sure on the weight but im not worried about it.

So.another 140$ for a pair of spacers doesnt bother me, I've already got enough money in the car its just water under the bridge.

I ended up putting on some 225/40 Falken tires on back , the front still have 215/35 on which are stretched on and look stupid, when I replace those I'll be getting the matching size and I will.need some spacers so they don't rub on the suspension.


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