Hub Centrics - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

KingBaeless · 05-02-2018, 12:27 PM

So i've lost my hub centrics, what size do i need ?
I run xxr's 550 17x8.5
Wheel bore is 73mm if im correct, just need clarification.
Thanks.

Sapphireho · 05-02-2018, 12:35 PM

Do you have a receipt from when you bought them?

Icecreamtruk · 05-02-2018, 12:53 PM

You dont need any.

Leonardo · 05-02-2018, 01:16 PM

Quote:

Originally Posted by KingBaeless

So i've lost my hub centrics, what size do i need ?
I run xxr's 550 17x8.5
Wheel bore is 73mm if im correct, just need clarification.
Thanks.

Hub bore is 56.1

17x8.5 is a rare size.

Yoshoobaroo · 05-02-2018, 01:17 PM

Quote:

Originally Posted by Icecreamtruk

You dont need any.

Wrong. You cannot locate the wheel reliably using the lug seats. Bolt circle tolerances don't work that way.

wparsons · 05-02-2018, 01:55 PM

Quote:

Originally Posted by Yoshoobaroo

Wrong. You cannot locate the wheel reliably using the lug seats. Bolt circle tolerances don't work that way.

Wrong. Tapered seat lugs are actually designed to precisely center each lug on the stud.

Flat seat lugs would be an issue, but conical (spherical) or tapered seats are 100% fine.

BigTuna · 05-02-2018, 02:00 PM

Quote:

Originally Posted by Yoshoobaroo

Wrong. You cannot locate the wheel reliably using the lug seats. Bolt circle tolerances don't work that way.

Quote:

Originally Posted by wparsons

Wrong. Tapered seat lugs are actually designed to precisely center each lug on the stud.

Flat seat lugs would be an issue, but conical (spherical) or tapered seats are 100% fine.

You're both right.

Yes, a hubcentric ring will help support the wheel on the hub and make sure it is centered better than just the lug nuts.

However, will using only the lug nuts to keep the wheel centered work? Yes, and you probably won't have an issue, depending on usage. It's just less robust.

Yoshoobaroo · 05-02-2018, 02:27 PM

Quote:

Originally Posted by wparsons

Wrong. Tapered seat lugs are actually designed to precisely center each lug on the stud.

Flat seat lugs would be an issue, but conical (spherical) or tapered seats are 100% fine.

I'm not worried about the conical seats.
The hole pattern in the hub is not nearly as accurate as the surface of the hub bore, hence why I mentioned bolt circle tolerances.

I've used conical lugs without a hubcentric ring and gotten significantly vibrations in the wheel. I'd rather use the hub surface if it was designed for it.

iamrich83 · 05-03-2018, 01:47 AM

What kind of shitty wheels are you guys using that a spherical lug hole wheel needs to be hubcentric to avoid vibrations?

My stock miata wheels aren't hubcentric and work perfectly. I can't imagine an OEM would use non-hubcentric wheels if it was going to be such shit.

Yoshoobaroo · 05-03-2018, 06:44 AM

Quote:

Originally Posted by iamrich83

What kind of shitty wheels are you guys using that a spherical lug hole wheel needs to be hubcentric to avoid vibrations?

My stock miata wheels aren't hubcentric and work perfectly. I can't imagine an OEM would use non-hubcentric wheels if it was going to be such shit.

Volk TE37s. Maybe I'm just anal and what is a significant vibration for me isn't for most people.

churchx · 05-03-2018, 06:59 AM

Sometimes disbalance might come also from other unnoticed reasons. For example if tire on wheel is non remounted/rebalanced for years, some uneven wheel/tire wear/damage or fix/patch w/o rebalance, or if some balancing wheels happened to fall off at some point, if one tightens lug nuts in wrong order not in cross/star fashion. By my experience in most cases even without spigot center rings lugcentric wheels itself always centered right with properly tightened lug nuts on all cars/wheels i had so i'd rather blame other reasons as more possible. Though then again hub rings are cheap, so one's budget won't be broken if one buys them for ease of mounting and some piece of heart/extra ensurance. Just that imho they are not must have/mandatory on lug centric wheels, but cheap nice to have extra.

Leonardo · 05-03-2018, 11:15 AM

I never used hubcentric rings back in he day. Then one car I had needed them, and I had to wait to get them. Now I always get them. They do not cost much, and can save a big headache.

wparsons · 05-03-2018, 11:31 AM

Quote:

Originally Posted by Yoshoobaroo

I'm not worried about the conical seats.
The hole pattern in the hub is not nearly as accurate as the surface of the hub bore, hence why I mentioned bolt circle tolerances.

I've used conical lugs without a hubcentric ring and gotten significantly vibrations in the wheel. I'd rather use the hub surface if it was designed for it.

Are you suggesting that a plastic ring will hold the wheel in place more than 5 steel lugs/studs properly torqued down? If the lug bores aren't centered properly around the bolt circle the metal lugs and studs will definitely squish the plastic ring vs offsetting themselves within the bores.

If you're properly torquing down wheels (wheel in the air, star pattern a bit at a time), the wheel will absolutely center itself. If you set the car down before the lugs are seated properly, then you'll definitely get a wobble. Going into my 6th summer with the car running RPF1's without centering rings, no vibrations ever.

ichitaka05 · 05-03-2018, 11:45 AM

If you google it, it does answer pretty much all the stuff you're looking for.
This site shows XXR 550 specs. Which show what size centerbore is. Member already answered stock hub bore size in the post.

With that info go to Amazon or eBay to search hubcentric ring: "(wheel centerbore)mm to (hub bore)mm".

05-02-2018, 12:27 PM	#1
KingBaeless Member Join Date: Jan 2016 Drives: 2017 GT86 Location: Sauga City Posts: 198 Thanks: 76 Thanked 96 Times in 70 Posts Mentioned: 3 Post(s) Tagged: 1 Thread(s)	Hub Centrics So i've lost my hub centrics, what size do i need ? I run xxr's 550 17x8.5 Wheel bore is 73mm if im correct, just need clarification. Thanks. __________________ Instagram - @WessleeSnapz

05-03-2018, 11:15 AM	#12
Leonardo Country Boy 4 Life Join Date: Jul 2012 Drives: 19' & 06' Ridgelines, 13' FR-S Location: EUGENE Posts: 5,228 Thanks: 6,719 Thanked 5,292 Times in 2,720 Posts Mentioned: 47 Post(s) Tagged: 1 Thread(s)	I never used hubcentric rings back in he day. Then one car I had needed them, and I had to wait to get them. Now I always get them. They do not cost much, and can save a big headache. __________________ I LIKE TIRES!

05-03-2018, 11:45 AM	#14
ichitaka05 Site Moderator Join Date: Oct 2009 Drives: ichi 86 Project Location: Middle of No where Posts: 20,994 Thanks: 7,689 Thanked 19,157 Times in 8,347 Posts Mentioned: 689 Post(s) Tagged: 28 Thread(s)	If you google it, it does answer pretty much all the stuff you're looking for. This site shows XXR 550 specs. Which show what size centerbore is. Member already answered stock hub bore size in the post. With that info go to Amazon or eBay to search hubcentric ring: "(wheel centerbore)mm to (hub bore)mm". __________________

05-02-2018, 12:35 PM	#2
Sapphireho Chicken bucket Join Date: Mar 2016 Drives: '15 ultramarine Location: Idaho Posts: 13,366 Thanks: 5,530 Thanked 18,507 Times in 8,744 Posts Mentioned: 158 Post(s) Tagged: 0 Thread(s)	Do you have a receipt from when you bought them?

05-02-2018, 12:53 PM	#3
Icecreamtruk Senior Member Join Date: Dec 2015 Drives: Track preped NA FRS Location: Montreal, Canada Posts: 987 Thanks: 1,056 Thanked 681 Times in 405 Posts Mentioned: 12 Post(s) Tagged: 0 Thread(s)	You dont need any.

05-03-2018, 01:47 AM	#9
iamrich83 Member Join Date: Feb 2018 Drives: 2017 Toyota 86, 2000 Mazda Miata Location: Sumter, SC Posts: 19 Thanks: 0 Thanked 4 Times in 3 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	What kind of shitty wheels are you guys using that a spherical lug hole wheel needs to be hubcentric to avoid vibrations? My stock miata wheels aren't hubcentric and work perfectly. I can't imagine an OEM would use non-hubcentric wheels if it was going to be such shit.

05-03-2018, 06:59 AM	#11
churchx Senior Member Join Date: Mar 2015 Drives: 2014 GT86 Location: Latvia, Riga Posts: 4,333 Thanks: 696 Thanked 2,086 Times in 1,436 Posts Mentioned: 53 Post(s) Tagged: 1 Thread(s)	Sometimes disbalance might come also from other unnoticed reasons. For example if tire on wheel is non remounted/rebalanced for years, some uneven wheel/tire wear/damage or fix/patch w/o rebalance, or if some balancing wheels happened to fall off at some point, if one tightens lug nuts in wrong order not in cross/star fashion. By my experience in most cases even without spigot center rings lugcentric wheels itself always centered right with properly tightened lug nuts on all cars/wheels i had so i'd rather blame other reasons as more possible. Though then again hub rings are cheap, so one's budget won't be broken if one buys them for ease of mounting and some piece of heart/extra ensurance. Just that imho they are not must have/mandatory on lug centric wheels, but cheap nice to have extra.

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