Hub centric rims

[Red_Bean_Bun]

The BMW original rims fit the BMW wheel hub snugly.

An aftermarket rim for production reason comes with a standard sized hub that is usually bigger than the BMW hub. It relies on the 5 bolts to keep it in place.

When you change your rims to an aftermarket rim that is not hub centric, you might get steering vibrations to some squealing when you apply the brakes.

Is this true ?

 

[Carcinogenic]

Re: Hub centric rims

Not true.
1) All road cars depends on 5 bolts to keep its wheel in place!! Enzo is one exception...
2) Not all aftermarket wheels need the hub ring
3) Squealing of brakes nothing to do with loose wheels
4) For sure you will get vibrations with a loose wheel... after a while your wheel will travel faster than your car... maybe...
5) As far as i know, there is no production reason why it comes with a standard sized hub that is usually bigger than the BMW hub.... are all aftermarket wheel manufacturers biased against BMW??

I'm curious... where did you get this nonsense from???

 

[wt_know]

Re: Hub centric rims

why not buy rim that is customised or made for bmw specific model.
i'm told by workshop that BBS (some model) are made universally where it can fits BMW any model by putting in a hub centric ring to fit.
rim maker will try to make universal rim so that it can fit various brand of car and model

 

[Carcinogenic]

Re: Hub centric rims

Its a variety.... some wheels of any specific brand that is for a specific brand of car, may or may not require the hub ring. I'm really not sure why. Even customised wheels require this hub ring at times.

 

[Red_Bean_Bun]

Re: Hub centric rims

Not true.
1) All road cars depends on 5 bolts to keep its wheel in place!! Enzo is one exception...
2) Not all aftermarket wheels need the hub ring
3) Squealing of brakes nothing to do with loose wheels
4) For sure you will get vibrations with a loose wheel... after a while your wheel will travel faster than your car... maybe...
5) As far as i know, there is no production reason why it comes with a standard sized hub that is usually bigger than the BMW hub.... are all aftermarket wheel manufacturers biased against BMW??

I'm curious... where did you get this nonsense from???

Personal observation - after measuring my hub centre and some aftermarket rims.

My own conjecture - Most manufacturers find it costly to customise the rims for each brand of cars. Especially if variances between brands are in millimeters.

The squealing bit came from observations - seems to coincide after a change to aftermarket rims for some.

 

[Carcinogenic]

Re: Hub centric rims

Ok, not being funny but how did you measure it?? You need vernier calipers to measure your centre bore!!!
For the sake of discussion... wheel makers do try to manufacture wheels for brand specific. Why? Simple....
Audi cb.... 57.1mm
Merc cb... 66.56mm
BMW cb... 74.1mm
Therefore.... can you imagine how thick your hub ring has to be if the wheels were manufactured for one size fits all brands??

Add on jap car for comparison
Honda cb... 56mm
Nissan cb... 66.1mm

I have a feeling someone gonna come in with some ktv cb measurement very soon

 

[Red_Bean_Bun]

Re: Hub centric rims

Ok, not being funny but how did you measure it?? You need vernier calipers to measure your centre bore!!!
For the sake of discussion... wheel makers do try to manufacture wheels for brand specific. Why? Simple....
Audi cb.... 57.1mm
Merc cb... 66.56mm
BMW cb... 74.1mm
Therefore.... can you imagine how thick your hub ring has to be if the wheels were manufactured for one size fits all brands??

Add on jap car for comparison
Honda cb... 56mm
Nissan cb... 66.1mm

I have a feeling someone gonna come in with some ktv cb measurement very soon

So I guess you should not just buy a set of rims from an Audi just because the offsets and OD matches your BMW - shaky decision.

I can lend you a set of calipers if you go to the KTV ...........................

 

[Carcinogenic]

Re: Hub centric rims

So I guess you should not just buy a set of rims from an Audi just because the offsets and OD matches your BMW - shaky decision.

I can lend you a set of calipers if you go to the KTV ...........................

No dude you shouldnt do that... after all, i do believe if you are going for a set of wheels from BBS, OZ, DPE etc, they would have made the same designs but specific fitments for Audi & BMW, unless its an Audi OEM you are looking at...
On another note.... forget the calipers.... i got the Perfect Tool
Hum@n needs the calipers though... but ya gotta teach him how to use it


Edit : Forgot the most impt reason why rims for other makes wont fit BMW.... PCD

 

[zuoom]

Re: Hub centric rims

get a good quality, well fitting hub centric rings. it will be fine.

it can be aluminum or plastic.

via : http://www.1010tires.com/hubrings.asp

 

[Red_Bean_Bun]

Re: Hub centric rims

why not buy rim that is customised or made for bmw specific model.
i'm told by workshop that BBS (some model) are made universally where it can fits BMW any model by putting in a hub centric ring to fit.
rim maker will try to make universal rim so that it can fit various brand of car and model

What if the workshop forgot to put in the centric ring ? I think the rims would only be supported vertically by 5 horizontally positioned (and very physically stressed) bolts which miht result in vibrations..........

 

[roberttan]

Re: Hub centric rims

i cant answer why some rim can not be made perfect hub centric, my guess is cost effectiveness to produced a rim that fits as many car as poosible,so with the economy of scale make the cost lower.
is all the cost matter when come to production.
If a wheel that have the PCD 5 hole x 120 (BMW PCD) which can fits all BMW but be more precised differ offset for differ series. other than offset that is
wheel centre to lookup for,
for instant 5 series centre holes diff from E34 (72.5mm) E39 (74.1mm) now E60 (back to 72.5mm)
more interesting one is the X6 front Centre hub 74.1 and rear Centre hub 72.5
is also nothing wrong to use those centre hub adaptor ring (plastic or metal) so long they are accurately size and strong
A good workshop would never forget to install the centre ring ( which is very important for car Like BMW which wheel are secure by Bolt and not NUTS)
the consequence is not only cause vibration ,and it could lead to worse situation the whole wheel could come out from your car.
So always good to double check should you encounter vibration before or after wheels changed, and just ask to make sure everything is properly fit
Correct PCD(you will be surprise) / centre hub/ even bolt sitting / also wheel spacer if got

 

[roberttan]

Re: Hub centric rims

honestly speaking i have seen BMW wheel (PCD 5x120) fitted on Jaguar (PCD 5x 120.65)
also 5 x 112 (audi ) on Japanese car (5x 114.3) and (5x114.3) fitted on Skoda(5 x 112)
so how are we going to prevent this to happen on our car?
will ask the shop or seller to measure and prove?
i think is the business ethic of the company

 

[Kelv]

Re: Hub centric rims

Happen to see this thread.
Does anyone know where to buy a higher quality hub o-ring?
Either of the 2material types are ok, so long as it's of a higher fitting & quality.
Any advise? Thanks.

 

[Kelv]

Re: Hub centric rims

Happen to see this thread.
Does anyone know where to buy a higher quality & better fitment hub o-ring for volks?
Either of the 2material types are ok.
Any advise? Thanks.

 

[Red_Bean_Bun]

Re: Hub centric rims

Try Pitstop...

 

[roberttan]

Re: Hub centric rims

Happen to see this thread.
Does anyone know where to buy a higher quality & better fitment hub o-ring for volks?
Either of the 2material types are ok.
Any advise? Thanks.

you dont have to buy a super quality

 

[wt_know]

Re: Hub centric rims

would you buy a rim that is made for your car centre bore (72.56mm) or install hub centre ring to fit other rim ?

 

[roberttan]

Re: Hub centric rims

would you buy a rim that is made for your car centre bore (72.56mm) or install hub centre ring to fit other rim ?

Yes i will go for the rim machined to fit my car without centre ring if both rim are identical.
But the trouble this usually is not the case, most people buy rim becos of design or quality
Again is nothing wrong to go with the ring that is accurately machined or came OE from wheel maker and NO vibration issue.
You can have a rim is perfectly made for your car and yet still has vibration HOW

 

[AC Schnitzer]

Re: Hub centric rims

I would go with rims that don't require the use of hub rings to fit.

I do a fair bit of competitive events and probably switch between street and semi slick tyres/rims few hundred times a year. I do not want to run into a situation where I have forgotten to put on the hub rings and drive at 9/10 or if the workshop had forgotten to put the hub rings when I get fresh tyres.

@Robert: Tyres are not completely round constantly. There are a lot of variables. You can balance a set of tyres now and it'll be out of balance again in a few thousand km depending on driving style/use. Flatspots, stone dug deep in the tyre, putting TPMS without balancing are just a few examples.

Worst case scenario I've seen regarding poorly manufactured replica rims is that no amount of balancing regardless number of wheel weights will resolve the matter. This is because for some strange reason, a particular part of the rim has a higher density and therefore higher weight located away from the center of the rim. Not all replica rims poorly manufactured. There some reasonable ones around.

 

[Red_Bean_Bun]

Re: Hub centric rims

Rims that fit without rings would be ideal but most people change rims without considering this and some tyreshops don't bring this up unless you ask them to check the fit for you when you change rims.

I would go with rims that don't require the use of hub rings to fit.

I do a fair bit of competitive events and probably switch between street and semi slick tyres/rims few hundred times a year. I do not want to run into a situation where I have forgotten to put on the hub rings and drive at 9/10 or if the workshop had forgotten to put the hub rings when I get fresh tyres.

@Robert: Tyres are not completely round constantly. There are a lot of variables. You can balance a set of tyres now and it'll be out of balance again in a few thousand km depending on driving style/use. Flatspots, stone dug deep in the tyre, putting TPMS without balancing are just a few examples.

Worst case scenario I've seen regarding poorly manufactured replica rims is that no amount of balancing regardless number of wheel weights will resolve the matter. This is because for some strange reason, a particular part of the rim has a higher density and therefore higher weight located away from the center of the rim. Not all replica rims poorly manufactured. There some reasonable ones around.