78 1/2 ton stock wheel size?

[Choptop32]

What is the width and backspace of a stock wheel on a 78 1/2 ton?

[Captkaos]

15x7 with 4" backspacing.

[bmaier]

i always thought it was 15x8. and wasnt it different between 2 & 4 wheel drives?

[comp]

steel wheels rallys ??

[bmaier]

i believe we are talkin bout the rallys...right?

[comp]

i believe we are talkin bout the rallys...right?

 i'm don't know

[Choptop32]

yep, i'll post a pic of them on monday

[comp]

cool 

[Captkaos]

Steel and Rally both were 15x7 with 4" backspacing.  There was an optional 15x8 Rally with 4" backspacing in the latter years also, but you asked about stock and I read that as standard.  The aluminum wheels were 15x7 with 4" backspacing also.  There were only 2 sizes offered by the factory, 15x7 and 15x8 both were 4" backspacing.  The rim size will be stamped on the wheel lip also...

[comp]

cool ,,,will look better

[Choptop32]

here is the wheel. Its on my 64 Chevy Panel Truck. Was told by the previous owner that the wheels came off a 78 1/2 ton. I'm replacing them with Radir Tri-Ribs and wanted to get the same size, width and backspace, as space is a little tight on the rear end.

[ccz145a]

yep, they're 15x7. you can tell by the half moon cut out on the trim ring, 15x8 had a hole in a wider trim ring.

[Captkaos]

you can also look on the back side.  the size is stamped on the rim.