OT:Holden rims

Submitted: Tuesday, Dec 04, 2007 at 11:03
ThreadID: 52225 Views:7805 Replies:7 FollowUps:12
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Can anyone please tell me if HQ-HZ Holden rims are the same as VB- VK - VL Holden rims ?

Looking for a spare for my trailer......

Thanks in advance
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Reply By: Member - Borgy.. (SA) - Tuesday, Dec 04, 2007 at 11:14

Tuesday, Dec 04, 2007 at 11:14
G'day Cypher

Stud pattern is the same , but offset will be different , check to make sure it will suit trailer first, if your in Adelaide , i have a few of these rims , you can have one if you want

Cheers......Dave
AnswerID: 274933

Reply By: CYPHER-CHLNGER - Tuesday, Dec 04, 2007 at 11:33

Tuesday, Dec 04, 2007 at 11:33
Thanks Dave, In Perth but really appreciate the offer.....

Sorry, not very mechanically minded, but what do you mean by offset ?
AnswerID: 274937

Follow Up By: Member - Borgy.. (SA) - Tuesday, Dec 04, 2007 at 22:24

Tuesday, Dec 04, 2007 at 22:24
G'day Cypher

I have used the HQ - HZ Holden wheels on my trailer wich has commodore hubs plenty of times without a prob......now im not going to tell you or anyone else for that matter to go ahead and use them, the decision is entirely yours.....sorry if your confused mate , but this forum has a good reputation for doing that to people ...lol..especially when you get all the know it alls on here

Cheers.......Dave
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FollowupID: 538695

Reply By: splits - Tuesday, Dec 04, 2007 at 11:45

Tuesday, Dec 04, 2007 at 11:45
The stud pattern is NOT the same. The HQ to HZ has the American Chev pattern which is five studs on a 4 3/4 inch circle.

The Commodore, except the four cylinder model, is metric. Its studs are on a 120 mm circle. There is a difference of only about .65 mm but that is enough to eventually cause the wheel studs to break.

You will also find the HQ and later wheels will have a back spacing of around 90 to maybe 100 mm. The Commodores from that era were 120 mm.

There are warnings all over the Holden and hot rod sites on the net about the interchangeability of these wheels. Plenty of people have reported having all five studs break at the same time with disasterous consequences.

Brian
AnswerID: 274942

Follow Up By: Louie the fly - Tuesday, Dec 04, 2007 at 14:55

Tuesday, Dec 04, 2007 at 14:55
You are spot on Splits. The HQ - HZ rims do have the Chevy pattern, and they are also the same as jaguar rims cept for the various jaguar offsets. Definitely not the same as Commodore of any model.
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Follow Up By: Redback - Tuesday, Dec 04, 2007 at 15:32

Tuesday, Dec 04, 2007 at 15:32
Yes they are, HQ ARE 120mm PCD same as the Commodore, Disco 2, P38a Range Rover, BMW M3, X3 & 5, VW Transporter.

I know this cause i had disc hubs made for my camper in HQ/Commodore stud pattern.

Call any trailer place if you don't believe me!!

HT/HK are different as are all holdens before HQ!!!

Baz.
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Follow Up By: splits - Tuesday, Dec 04, 2007 at 17:02

Tuesday, Dec 04, 2007 at 17:02
Sorry Redback but they are not the same. The HQ is an American based car while the Commodore came from the German Opel. That is why it is metric.

Unfortunately the two patterns are so close that they look the same and you don't notice the difference when you tighten the nuts on steel wheels. You do on many of the alloy wheels though. This similarity resulted in many people interchanging the wheels back in the 1980s and plenty broke the studs. If you ask the question on any Holden site today you will get plenty of replies telling you not to do it.

If you don't believe me then don't worry about trailer places, try ringing Disc Brake Australia or one of the leading brake conversion companies like Hoppers Stoppers in Victoria or better still the customer inquiry number for General Motors.

Brian
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FollowupID: 538622

Follow Up By: Redback - Tuesday, Dec 04, 2007 at 17:36

Tuesday, Dec 04, 2007 at 17:36
HQ PCD is 4.75"

Commodore PCD is 120mm = 4.72"

I'm sure like most of the conversion these days 120mm was rounded out, instead of giving it 119.8mm.

Baz.
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FollowupID: 538628

Follow Up By: Redback - Tuesday, Dec 04, 2007 at 17:50

Tuesday, Dec 04, 2007 at 17:50
4.75 inches = 120.65 millimeters

120mm = 4.72440945 inches

As above probably rounded up
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FollowupID: 538631

Follow Up By: TD100 - Tuesday, Dec 04, 2007 at 21:19

Tuesday, Dec 04, 2007 at 21:19
Plus the centre hub area on the commo rims is half a mill smaller and wont go over the HQ-WB hub unless machined out(15"rims anyway dont know about 14s)cheers Paul
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Reply By: CYPHER-CHLNGER - Tuesday, Dec 04, 2007 at 16:15

Tuesday, Dec 04, 2007 at 16:15
Thanks. I am more confused than before. LOL

I think i will take the chance, as it is only a spare..so if it fits, but if truely NOT recommonded, will only be for a very short distance.

Thanks everyone for the feedback.
AnswerID: 274977

Follow Up By: Member - Graham H (QLD) - Tuesday, Dec 04, 2007 at 18:44

Tuesday, Dec 04, 2007 at 18:44
Why takle the chance there must be hundreds of the proper ones lying around> All Holdens die only the wheels are left. LOL
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FollowupID: 538648

Reply By: Louie the fly - Tuesday, Dec 04, 2007 at 19:21

Tuesday, Dec 04, 2007 at 19:21
At risk of starting an arguement about wheel PCD's (HQ 4.750" or 120.65mm, Chromodore 120.0mm), picture this scenario. Your driving along a busy road and a wheel comes off because wheel studs have broken (from being constantly stressed sideways - 3mm deflection each, in a radial pattern). A couple of years back a rear wheel came off a roadster, Model A or 32, something like that, somewhere is Qld. End result, 2 dead. Whats the value of a wheel rim V's the value of your wife & kiddos? A risk worth taking? Gee, we go bush and take a spare spare for goodness sake. You can probably get one at a wreckers for $10 (including GST even). New wife would cost at least twice that! lol
AnswerID: 275003

Follow Up By: Redback - Wednesday, Dec 05, 2007 at 07:43

Wednesday, Dec 05, 2007 at 07:43
There the same, and anyway if they were .65 of a mm different, then share that over 5 studs, it's .1 of a mm approx, is that all that much really??

Baz.
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FollowupID: 538722

Follow Up By: Member - Luke (SA) - Saturday, Dec 08, 2007 at 00:05

Saturday, Dec 08, 2007 at 00:05
Have to agree with you there Baz!!

That small difference is stuff all, I have both seen and used Commodore wheels on HQ stubs and visa versa.

I know a bloke with a VH SS Commodore with 7" Magnums from a HQ on it.

The wheel nuts are not the standard type you see with the tapered ends. They fit inside the wheel and you really have to get them central.

Has taken the same car (and yes with the same wheels on it) up to the Territory doing speeds the average person would sh#t themselves doing and is still here today to tell the story.

Has no balancing issues with this car, and believe me if there was those wheels WOULD NOT still be on that car.

As Cypher has stated it is for the trailer, I cannot personally see a problem myself.

I have 2 people on here that know this person and will back this up.

My 2c and experience

Cheers Luke
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FollowupID: 539325

Follow Up By: Member - Borgy.. (SA) - Saturday, Dec 08, 2007 at 00:17

Saturday, Dec 08, 2007 at 00:17
G'day Louie

"Whats the value of a wheel rim V's the value of your wife & kiddos? A risk worth taking?"

Curious about something here mate..... Where in his post does it say he carts his wife and kids around in his trailer???

Cheers......Dave
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FollowupID: 539326

Reply By: brushmarx - Wednesday, Dec 05, 2007 at 10:06

Wednesday, Dec 05, 2007 at 10:06
I have little knowledge of wheels, but I had a horse float with HK/HT wheels, and I could not get any spares in good condition.
I was pointed towards Volvo wheels as being same stud spacing. These worked fine, but I don't know if the information was correct or safe, but the horse never fell out.
Cheers
AnswerID: 275068

Follow Up By: splits - Wednesday, Dec 05, 2007 at 13:06

Wednesday, Dec 05, 2007 at 13:06
That information was correct. The FE through to HG used a 4 1/4 inch circle. Volvo were using the common Ford pattern of five studs on a 4 1/2 inch circle in the 1950s and part of the 60s. The discs and hubs were commonly used on hot rods during the 1970s with a matching Ford rear axle. They changed to the Holden 4 1/4 size after that and used it for many years. They may still be using it on current models for all I know.

Brian
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FollowupID: 538787

Reply By: Jimbo - VIC - Wednesday, Dec 05, 2007 at 13:28

Wednesday, Dec 05, 2007 at 13:28
Don't do it.

Do what I did a few years back and rang Holden. They said although they are similar, the HQ is imperial and the VB metric and are not safely interchangeable.
AnswerID: 275103

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