The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 20" (R) & 18" (F) for 67 C10 SS. Looking for best width and back spacing

**Jason Banks** · 01-07-2022, 11:50 AM

For the rear, most of the 20x10 wheels you will find have approx 5.5" backspacing and most of the 20x9.5 will have approx 5.25" backspacing.

With the narrower rear end you find on the 1967 and 1968(like I have) you would most likely want 20x10 with 4.5 backspacing and 20x9.5 with 4.25 backspacing, to make them look correct. I'm pretty sure my 20x10 with 5.5 backspacing were going to rub the wheelhouse inside the bed.

I found a thread on this message board where people were using 1" spacers to make them work, and man do they look good like that.

I had the opportunity to get a rearend off a 1972 have have now changed to that, before I have the truck running.

Those 20x10 with 5.5 and 20x9.5 with 5.25 fit so many more trucks. Likely 71-87+ So that is what the wheel manufacturers focus on.

You could always have wheels custom made with a different backspacing, but those wheels are around $1000 each. If I ever go that route. I'll likely swap back in the 1968 rear end and make careful measurements with the truck fully assemble to make sure I get exactly what looks best.

01-07-2022, 11:50 AM	#9
Jason Banks Senior Member Join Date: Dec 1999 Location: TX Posts: 1,691	Re: 20" (R) & 18" (F) for 67 C10 SS. Looking for best width and back spacing For the rear, most of the 20x10 wheels you will find have approx 5.5" backspacing and most of the 20x9.5 will have approx 5.25" backspacing. With the narrower rear end you find on the 1967 and 1968(like I have) you would most likely want 20x10 with 4.5 backspacing and 20x9.5 with 4.25 backspacing, to make them look correct. I'm pretty sure my 20x10 with 5.5 backspacing were going to rub the wheelhouse inside the bed. I found a thread on this message board where people were using 1" spacers to make them work, and man do they look good like that. I had the opportunity to get a rearend off a 1972 have have now changed to that, before I have the truck running. Those 20x10 with 5.5 and 20x9.5 with 5.25 fit so many more trucks. Likely 71-87+ So that is what the wheel manufacturers focus on. You could always have wheels custom made with a different backspacing, but those wheels are around $1000 each. If I ever go that route. I'll likely swap back in the 1968 rear end and make careful measurements with the truck fully assemble to make sure I get exactly what looks best.