16" 8 bolt Split Rims for 1.5 ton Australian Chevrolet Trucks

[Tony Smith]

Originally Posted by Bob Carriere

Hi Tony

I see we are reading from the same Chevrolet army parts book.........
from what you are saying it seems to indicate they were fitted with 18 x 10:50 tires/rims when re-asssembled in the UK for Poland or Australia.

This has me puzzled....... So complicated.

Bob C

The black and white "Factory" pics are at Oshawa, so there was no change to the vehicle on arrival at it's destination. The X2 indicates it's destination, or perhaps it's contract. I wish David Hayward was here to explain in his rambling way the oddities of Chevrolet contracts because they really are a confusing mess.

Gimme a Ford anyday.

[Bob Carriere]

Fffffssst.......Ffffuu........fsssstt

I have a hard time with 4 letter furds ..... I mean words......

Yes do miss David.... we are a dying breed!!!!!!

[Philippe Jeanneau]

Trying to make this a reality... So far I have the following information on the original Canadian 16" wheel:

Rim Size: 16"
Width: To be determined...
Backspace: 4-7/8

Bolt Pattern: 10 x 7.25"
Flange thickness: 19/64" chamfered for wheel nuts.

Hub wheel Studs: 9/16"-18
Bolt hole: 19/32" straight cut.
Pilot Hole: 4.75"

Joining bolts: (8) 7/8-14 UNF

Backspace: 4-7/8”
Outer half: 3-15/16"

The new wheel (minus the stem valve protector) would have different backspaces front and rear and be wider (at least 8") to fit the U.S. spec. 1.5 trucks...

74930988_2659280367466068_965008108357156864_n - Copy.jpg trailer-double-plated-wheel-rim-500x500.jpg DSC_6720 - Copy n.jpg DSC_6759 - Copy - Copy R.JPG

[Tony Smith]

Originally Posted by Philippe Jeanneau

Trying to make this a reality... So far I have the following information on the original Australian 16" wheel:

Rim Size: 16"
Width: 8"

No such thing.

The 16" rims were made in Canada and were 6" wide.

The only Australian-specific wheels were 18".

[Philippe Jeanneau]

Thank you for the correction and information... Were the 18" 10x7.25 (10 bolt) Australian wheels 6" wide also?

Why is it so difficult to find the right information or photographs? I have been told that the width of these wheels is anywhere from 6", 6-1/2" and even 7" wide...

But does anyone even know how to measure the width of a wheel correctly? Something so simple doesn't have to be so bloody complicated!

If someone has the correct information with supporting evidence please post it- all the information!... I am sure many will find it useful.

[Hanno Spoelstra]

Originally Posted by Philippe Jeanneau

But does anyone even know how to measure the width of a wheel correctly? Something so simple doesn't have to be so bloody complicated!

If someone has the correct information with supporting evidence please post it- all the information!... I am sure many will find it useful.

It's not that difficult really, see for example: https://www.oponeo.co.uk/blog/how-to...wheel-markings

This drawing pretty much sums up the basics of wheel geometry:

131.gif

[Philippe Jeanneau]

Hello Hanno,

Thank you very much for the clear and informative response... That should clarify the issue of measuring and terminology once and for all...

As for the original Canadian 10 x 7.25 bolt circle (8 Bolt) wheel , I have been given the following information by someone kind enough to drive 500 Km to a museum in Australia where this truck resides... His attached diagram illustrates the backspace as well as the depth of the outer half... Mind you, these measurements were taken from the spare wheel on top of the truck...

If you take the last image (CMP wheel for reference) since I have nothing else, we could safely say that the width of the outer lip is approximately 1-1/16" or 26.98 mm...

So, if we take the outer wheel half measurement of 100 mm, minus the lip or 26.98 mm, = 73.02 mm. Following suit, take the inner backspace measurement of 124 mm minus 26.98 mm = 97.02 mm...

To finalize (trying to obtain the true width of the wheel) 73.02 mm + 97.02 mm + 15.00 mm ( two combined wheel flanges) = 185.4 mm or 7-9/32... a hair over 7-1/8"... So it seems that these Canadian wheels were not 6" wide, but about 7-1/8"... Remember also that a tire that was about 260mm wide was fitted to this rim in most cases...

Is this closer to the truth? Unless someone else has this exact rim without a tire, and can provide exact measurements with photos, this is all I have after a year of digging...

thumbnail_IMG_5271.jpg

thumbnail_IMG_5264.jpg thumbnail_LRDG Wheel.jpg

thumbnail_IMG_5255.jpg Pic 3 split rim (1).jpg

[Hanno Spoelstra]

Originally Posted by Tony Smith

The black and white "Factory" pics are at Oshawa, so there was no change to the vehicle on arrival at it's destination. The X2 indicates it's destination, or perhaps it's contract. I wish David Hayward was here to explain in his rambling way the oddities of Chevrolet contracts because they really are a confusing mess.

X2 stands for "export to UK (bult-up)" - see David's list on this thread:

Originally Posted by David_Hayward (RIP)

I think that these suffixes were meant to relate to the GM of Canada export destination codes that were suffixes to the model numbers, and used from 1935 to 1958 at least:

X EXPORT DESTINATION CODES AFTER SERIAL NUMBERS:
X1 ANY POINT EXCEPT FULLY BUILT UP
X2 UNITED KINGDOM BUILT UP
X3 INDIA CKD
X4 AUSTRALIA CKD
X5 NEW ZEALAND CKD ALTHOUGH ASSEMBLED TRUCKS HAD “XH”
X6 BATAVIA, NETHERLANDS EAST INDIES CKD
X7 UNITED KINGDOM CKD
X8 ANY POINT CKD
X9 SOUTH AFRICA CKD ALTHOUGH ASSEMBLED TRUCKS HAD “XG”