Front wheel spacers - shave hub?

[Aitch]

Tried installing my 10mm front wheel spacers today, and found that the inner recess on them doesn't allow them to sit back flush against the wheel hub. Essentially the hub bore is too thick and sticks out too far.







I thought I'd read that it was the rear wheels where the hub had to be shaved down for 10mm or smaller spacers, but evidently it's the front? Advice on how to proceed? I'm guessing an angle grinder is the solution...

[ColtonBH]

I wouldn't grind down anything, correct me if I'm wrong,but for that thin of spacers you should need ones that fit over the UB and don't have a hub ring on themselves

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[setconstr]

I bought H&R hub-centric 10mm and they are the same size as the hub and fit completely flat on the Hub all 4 was like $80.00 with the extended bolts

[Aitch]

I wouldn't grind down anything, correct me if I'm wrong,but for that thin of spacers you should need ones that fit over the UB and don't have a hub ring on themselves

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Based on how these fit, even if they sat flush at the back the stock hub still would barely poke out through the spacer to center the wheel. So I think they still need their own ring on the spacers.

I bought H&R hub-centric 10mm and they are the same size as the hub and fit completely flat on the Hub all 4 was like $80.00 with the extended bolts

At that price I suppose I should have just bought the H&R. Might just go that route instead.

[setconstr]

No matter what brand they need the hub-centric ring on them.......

[ColtonBH]

I'm talking something like these where you still use the hub
You said they were 10mm? They look thinner than that

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[ColtonBH]

Nevermind, I looked at the picture wrong, def need the hub on the spacer

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[Aitch]

Yeah the ones you posted are probably like 3-5mm at most.

The good news is, the test-mount confirmed 10mm is the size to put my wheels where I want them.

[M3_CABRIO]

It should be chamfered on the back of that spacer to seat it flush. Also with 10mm it's almost not enough to safely run since your wheels rest on the extended part of that hub. 12mm is minimum to safely run. Turner sells a hub extender for running smaller than 12mm spacers in the front.


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[setconstr]

IMG_1196.jpgWhy would a 12mm be safer then a 10mm ? thats the width of the spacer so a wider spacer would be safer then a more narrow one ? the only thing that matters its it has a hub-centric ring that matchs your oem hub and you have extended lug bolts to match the new thickness. I have 10mm all around ( for years now ) no rubbing anywhere with Bilstein sports and H&R2 springs .....

[Aitch]

Yes as long as the spacers include a new chamfered extended lip to seat the wheels in a hubcentric manner, it's fine. That's why only the 3-5mm spacers don't have that feature, since the existing hub sticks through them.

[M3_CABRIO]

IMG_1196.jpgWhy would a 12mm be safer then a 10mm ? thats the width of the spacer so a wider spacer would be safer then a more narrow one ? the only thing that matters its it has a hub-centric ring that matchs your oem hub and you have extended lug bolts to match the new thickness. I have 10mm all around ( for years now ) no rubbing anywhere with Bilstein sports and H&R2 springs .....

Because of the hub length on the spacer.


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[setconstr]

Huh? I guess your talking about the hub-centric ring that is part of the spacer. If you purchase spacer at 10mm or more it will have a hub-centric ring as part of the spacer, if it doesn't then you shouldn't be putting them on your car at all. It wouldn't matter how thick the spacer is as long as it has a hub-centric as part of it and matching longer lug bolts and it doesn't make your tire rub.........

[M3_CABRIO]

Huh?

You seriously don't understand that you have less hub lip on a 10mm than a 12mm? Not talking about spacer extension mm. I am talking about what your wheel relies on to be safe off the spacer hub lip. 10mm is about 85% there for having the correct hub lip length. That's why turner came out with a hub extender to help safely put on spacers 10mm and below.


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[setconstr]

look at all the photos the 10mm spacers ( first photos )have a hub-centric ring that matchs the wheel Hub lip width ( or as you call length ) there is a grove inside the spacer that you hub ring fits into not the other photos that are like 3mm spacers with no hub ring on them. A 10 mm or 15m or 20 mm would still have the same width hub-centric ring as part of the spacer you just need long lugs as the spacer gets wider........

[M3_CABRIO]

Read this.




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[setconstr]

Lets agree to disagree because my H&R 10mm spacers do not have a gap

[M3_CABRIO]

I am not talking about the gap. Measure the spacers hub lip length.


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[setconstr]

I'm done good luck

[Aitch]

M3_Cabrio, you seem to be talking about 2 different things. The image you posted about spacers is talking about the gap at the back, if the recess in the back of the spacer isn't deep enough for the stock hub flange. The spacers I posted above exactly demonstrate what you are talking about. If you look at my pictures you'll see that the stock hub flange indeed sticks out more than 10mm. However, both 10mm and 12mm spacers have a recess machined into them for this flange to fit into, and then also have their own flange sticking out for the wheel to center on.

Separately you said you're not talking about the gap, but rather that 10mm spacers don't have the same flange on their face for the wheels to center on, as the stock hub has (the stock flange). This is clearly not the case for the 10mm spacers I have, and it doesn't look like the 10mm H&R ones are lacking that either. The spacers have a sufficient flange on their front side for the wheels to center on.

I'm going to trust setcontr's experience with 10mm H&R spacers working properly in this application, likely simply because the recess on their backside is deep enough for the whole stock hub flange to fit inside.

[blackknight530i]

Wow, you guys are all right, yet arguing like you're all wrong. The H&R 10mm spacers are different than most brand 10mm spacers in that they have a longer inside bore cut out that allows them to sit flush on BMW hubs, but the 10mm ECS for example don't and leave that gap that was shown in the pictures (I know from first hand experience that this is the case). If you go with a 12.5mm ECS spacer, it will fit without the gap, which is the reason for the suggestion above. I think the 10mm spacer from H&R will work as well, but 10mm is generally not advised.