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...
