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Fitment issues with 2017 MZ3 16" OEM Wheels

BenjiHoggi

OEM+
:
Eugene, OR
:
22v Mazda Protege5
Small Update

I bought some 5mm wheel spacers off Amazon (these), and just got them in the mail today. It's a bit too rainy at the moment to put them on with the wheels and test the fitment, but I did lay them on top of the inner hub of the new wheels which are under a shelter right now, and this is what it looks like:
IMG_20200215_135313675.jpg

IMG_20200215_135316149.jpg


It's kind of bothering me that the spacers aren't the same outer diameter as the hubs of the wheels and of the car.

It doesn't look like it would be super problematic, but I've never run spacers before. Does anyone see this as a safety risk, and should I expect most spacers to be like this? If not, I may look for some other ones and return these just for the sake of doing it right.

Amazon makes returns easy and I'm not in a huge rush. I'd just prefer not to have to pay loads of money just for spacers.

Ben
 
Last edited:

JazzySP20

Madaz
:
AUSTRALIA
:
BJII Astina SP20
If you're referring to the outer diameter of the spacer itself, that is fine. No issues.

I'm not a fan of non hub centric spacers. Specially on the front.
 

BenjiHoggi

OEM+
:
Eugene, OR
:
22v Mazda Protege5
If you're referring to the outer diameter of the spacer itself, that is fine. No issues.

I'm not a fan of non hub centric spacers. Specially on the front.
The description says they're hub-centric. Are they not? I don't know... I'm just curious.
See this is the problem, I really don't have experience with this other than from my online research.

If hubcentric is referring to wheels which rest on the hub and not the studs, my current aftermarket wheels don't appear to be like that, and they've been on the car for over a decade so far as I know. They don't seem to have any contact marks from being on a hub. Furthermore, in the rear, there doesn't seem to be anything structural on the hubs for the wheels to rest on (or hit) other than the studs. This is why my new wheels had no issues fitting in the rear, but appeared to not fit in the front.

I'm confused.
 

JazzySP20

Madaz
:
AUSTRALIA
:
BJII Astina SP20
The description says they're hub-centric. Are they not? I don't know... I'm just curious.
Sorry, to clarify my post, I was referring to hub centric spacers with the hub ring. See image below.

In Benji's case, he is fitting rims with a centre bore of 67.1mm onto the 67.1mm Mazda hub. But by fitting a 5mm spacer, the wheel will most likely not be on the hub, and instead will be on with just the 5 studs. Not a fan of this method, as if you were to hit a big enough pothole with enough force, it is possible for the wheel to go off centre and be unbalanced, or worse, break a stud(s).

By fitting a 67.1mm centre bore wheel onto a 67.1mm hub, it is impossible to machine a hub centric spacer WITH a hub centric ring like in the photo I attached. If you were to fit... say a wheel with a centre bore of 73.1 (most aftermarket wheels) onto a 67.1 hub, then you can machine a hub centric ring onto the spacer.

Hope all that makes sense. ☺
 

Attachments

BenjiHoggi

OEM+
:
Eugene, OR
:
22v Mazda Protege5
Sorry, to clarify my post, I was referring to hub centric spacers with the hub ring. See image below.

In Benji's case, he is fitting rims with a centre bore of 67.1mm onto the 67.1mm Mazda hub. But by fitting a 5mm spacer, the wheel will most likely not be on the hub, and instead will be on with just the 5 studs. Not a fan of this method, as if you were to hit a big enough pothole with enough force, it is possible for the wheel to go off centre and be unbalanced, or worse, break a stud(s).

By fitting a 67.1mm centre bore wheel onto a 67.1mm hub, it is impossible to machine a hub centric spacer WITH a hub centric ring like in the photo I attached. If you were to fit... say a wheel with a centre bore of 73.1 (most aftermarket wheels) onto a 67.1 hub, then you can machine a hub centric ring onto the spacer.

Hope all that makes sense. ☺
That's how I figured it would work, but it makes complete sense now. I've always been weary of the idea of spacers, and this is one of the reasons. From what you've said, it doesn't seem like I've got much else in terms of options. The hub of the car only sticks out far enough for the hub of the stock wheel to just barely hit it, but this causes it to not fit properly. If it were to fit properly, It would act as a reinforcement.

This still doesn't explain why my rear hubs are different from my fronts in terms of fitment. I forgot to take a photo of the rear hub without a wheel on, but here's what a rear/front comparison looks like without caps. Obviously it's a FWD car, so I don't expect them to be identical.
IMG_20200125_150756358.jpg

IMG_20200125_154600888_HDR.jpg


I suppose my next step here will be to just go ahead and get my tires mounted and everything put on to test it.
 

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