Hub-centric spacers

Discussions relating to MX5 Tyre choice, Wheels, Brakes Suspension components and other items to keep you going around corners, stuck to the ground or stopping on a dime.

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MrGrey
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Hub-centric spacers

Post by MrGrey » Sun Feb 09, 2014 12:30 am

I am wanting to put 25mm spacers on my car (I understand that they would need to have a cert) and was wondering if anyone could answer a few questions.

- does anyone know of a supplier of good quality spacers at a reasonable price? (no point wasting money on a set that will not pass a cert)

- is T6061 Aluminium or 2024 Alluminium the best material to go for?

- what is the size of the hub on the mx5? (eg hondas are 56.1mm)

- how much of a noticeable effect would spacers have on my car's handling?

Junkwhale
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Post by Junkwhale » Sun Feb 09, 2014 10:46 am

I had a quick look at this yesterday actually. Hub bore is 54.1mm (based on what's advertised for miata/mx5, could be wrong though)

Some of the options I found (all overseas, local might be cheaper esp. once shipping included):

http://www.kgsengineering.com/store/p/4 ... pacer.html

http://www.good-win-racing.com/Mazda-Pe ... 0886C.html

http://www.suspensionshop.co.uk/_c34910 ... 24~200.htm

Effect on handling should be minimal - same as a wheel with that offset, although you are introducing more unsprung weight, and an extra point of failure / bit that needs to not wobble, so quality is important.

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Post by Junkwhale » Sun Feb 09, 2014 11:09 am

Also from what i can tell the main effect of increasing offset is changing the scrub radius:

Image

With +45mm offset mx5's are at roughly 0 scrub radius. The more scrub radius the greater steering effort, more road shock transmitted through steering, and can increase the steering's sensitivity to braking inputs. These effects are pretty subtle though, esp at the small offset changes we're talking, and aren't necessarily good or bad - they could be viewed as giving more "feel" for what the wheels are doing, or viewed as "undesirable" feedback hiding other "desirable" feedback.

I imagine it's the kind of stuff I'd be entirely oblivious to & wouldn't even notice if I tried...

MrGrey
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Post by MrGrey » Sun Feb 09, 2014 11:51 am

thank you very much, very useful information :)

warrior
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Post by warrior » Sun Feb 09, 2014 12:33 pm

I bought some from redline performance in NZ for my MR2 and they were great quality. Have a look on there web site
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sprsta
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Post by sprsta » Sun Feb 09, 2014 9:38 pm

I had a set made by Znoelli for Hayleys car.
http://www.znoelli.co.nz/Products/WheelSpacers
They are hubcentric and also wheelcentric so you dont need extra hubcentric rings.
They aren't as cheap as the Chinese ones but they are very good quality

Image

Image

MrGrey
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Post by MrGrey » Sun Feb 09, 2014 10:11 pm

whats the difference between hub centric and wheel centric spacers?
and do you happen to recall how much your set cost to get made up?

sprsta
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Post by sprsta » Sun Feb 09, 2014 10:45 pm

its just that the bore diameter of the bore fits the hub and the adapter fits inside the center bore of the wheel so no need for rings

i think they were close to $400 for the set

evel
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Post by evel » Sun Feb 09, 2014 10:45 pm

Wheel centric fit the bore of the wheel where the hub would go if the spacer wasnt there. and hub centric means the spacers hub bore is correct for the hub on your vehicle
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Post by DEATH_INC. » Fri Apr 18, 2014 12:38 pm

sprsta wrote:I had a set made by Znoelli for Hayleys car.
Leons (Znoelli) spacers are top quality, and are the only one's I recommend to customers who want good stuff (not cheap...few and far between these days lol) or need them for high performance use.

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