Member - Borgy.. (SA) posted:

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

Louie the fly posted:

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.

Redback posted:

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.

splits posted:

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

Redback posted:

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.

Redback posted:

4.75 inches = 120.65 millimeters

120mm = 4.72440945 inches

As above probably rounded up

TD100 posted:

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

Member - Graham H (QLD) posted:

Why takle the chance there must be hundreds of the proper ones lying around> All Holdens die only the wheels are left. LOL

Redback posted:

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.

Member - Luke (SA) posted:

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

Member - Borgy.. (SA) posted:

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

splits posted:

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