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04-29-2019, 06:56 PM | #1 |
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1968 C-30 Stepside Wheels/Size
Does anyone know if wheels from a 2011 2500HD will fit a 1968 C-30 Stepside? If not or if you don’t know, does anyone know what backspacing/offset I should opt for? I’d prefer to get 17” wheels.
Thank You Troy |
04-29-2019, 09:35 PM | #2 |
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Re: 1968 C-30 Stepside Wheels/Size
On my '70 GMC C2500 I ran 265 75 16 on 16x7 Alcoas that had 4" backspacing (zero offset) and that was a great combo.
A 17x8 with 4.5" backspacing and 265 70 17 should be a good fit on your truck as well.
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44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax |
04-29-2019, 09:38 PM | #3 |
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Re: 1968 C-30 Stepside Wheels/Size
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04-29-2019, 09:43 PM | #4 |
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Re: 1968 C-30 Stepside Wheels/Size
Yes. An 8" wide rim is measured between the beads on the wheel so an 8" rim is really 9" overall width so the distance from the centerline mounting surface to the back of the wheel is 4.5". Same math applies to the 7" wide wheel as well. Overall width of wheel is 8" distance to WMS is 4".
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44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax |
04-29-2019, 09:48 PM | #5 |
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Re: 1968 C-30 Stepside Wheels/Size
Ok then, so a 4.5” backspacing is going to move the inside of the wheel/tire 1/2” closer to any potential interference. Based on the clearances you have on your truck, do you feel that will not be an issue?
Thanks Again Troy |
04-30-2019, 07:46 AM | #6 |
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Re: 1968 C-30 Stepside Wheels/Size
I don’t think it would be a problem. It moves the inside in, but it also moves the outside out.
To answer your original question, the OEM 8 lug rims will fit up until 2010, but they have even more backspacing. I want to say 4.5” on a 6.5” wide wheel? Google would answer that question for you. I still think the 7” rim with th 265 tire is a good fit for one of these 8 lug trucks.
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44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax |
04-30-2019, 11:27 AM | #7 |
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Re: 1968 C-30 Stepside Wheels/Size
Is the c30 a dually?
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05-01-2019, 09:16 AM | #8 |
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Re: 1968 C-30 Stepside Wheels/Size
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