57 replies to this topic

[GMACKIE]

Not sure about the others, but Porsche is 5 x 130.

[DJH]

Hey, I thought we were here to bag S4 Holdens.

[GMACKIE]

Well, I will not allow anyone to say that Porsche has only 4 1/2", when it's really 130mm!

[Ian G]

I would think it's more along the lines that tooling for the Commodore was European-based...

You are right about this, I remember George Shepheard pointing this out to me back in 1979. I guess the Commodores also have metric threads on the studs.

I think its correct as well,there was some minor difference,GM officially started converting to metric in 1973 but i think its parts suppliers were given the green light many years before that.

GM Metric.

Sorry about the obsessive posting,bored,sitting at home with the flu.

[sherpa]

That is incorrect, and old wives tale. They are the same stud pattern.That comes from a wheel manufacturer who should know. And yes Commodores use metric studs. But that has nothing to do with it.The majority of cars in this world use std imperial PCDs.5x 114.3 sounds very metric, its not it is 4 1/2" Ford,Chrysler, Porsche, Nissan, Toyota,Mazda and the list goes on. Though different spigot sizes. Magna, Camry, AU-FG Ford, some Mazda all use the same rim except for the spigot. And some are metric tuds, metric bolts and 1/2"UNF
Commodores have different spigots too so those wheels do not go on HQ. 4cyl Commys used Torana rims@ 4.25PCD with metric studs etc etc etc. I deal with this stuff just about daily

Lee, there is enough evidence out there to verify the fact that the two PCD's are in fact different, not by much, but they are different and wheels should not be swapped between the two as you are forcing the wheel studs to bend over a very short distance which can lead to failure

http://www.csadirect...ger_Fitment.pdf

You will notice Chev wheels are listed separately to Holden and have different PCD's

http://www.clarkospe...ex.php?cPath=33

Again two different spacers offered for the two different PCD's

http://holdenpaedia....m/Stud_Patterns

An article on this topic

Cheers Greg

Edited by sherpa, 19 August 2011 - 04:17.

[gtsmunro]

From experience, I tried jamming 4 HQ GTS rims on a VC Commodore in the early 80's. They didn't fit but the mags from the VC fit on the Monaro.

[eldougo]

This is a real EH at Bathurst going over Skyline.


Uploaded with ImageShack.us...Form Australian Automobiles.

[Ellis French]

Link to another at Bathurst....

http://www.motorspor...thurst_1976.jpg