Factory Wheels
 

Hello,

I recently purchased a 1978 GMC C15. Pretty original basic truck. Could these be original wheels to the truck?

https://i.imgur.com/Lkwz2lD.jpg

Re: Factory Wheels
 

Yep.

Those are the optional aluminum wheels.

Do you have the SPID label for the truck?

PH7 = forged

N90 = cast

K

Re: Factory Wheels
 

I do have the SPID:

https://i.imgur.com/giO5TNc.png

That's part of why I was wondering. Doesn't seem to be any wheel options.

Re: Factory Wheels
 

Yeah - somebody stuck those on there.

Would have had the base steel wheels, on (as you say) a pretty base truck.

K

Re: Factory Wheels
 

Optional wheels don't seem to fit the SPID theme of basic truck.

Pure speculation:
Dealer add after purchase.

Swap from another truck where that customer didn't want the aluminum wheels. Could be a buyer wanted a well optioned truck already on the lot except for the factory installed optional wheels.

A PO added wheels well after purchase date.

Re: Factory Wheels
 

Sort of what I thought too. The paint is the same. The SPID says solid color, but it has two tone white. I think it was dealer added the paint. Could also be previous owner.

Re: Factory Wheels
 

Man I really want a set of those wheels. Ive always loved them.

Re: Factory Wheels
 

Hard to tell from the angle but those look like the narrower version from the GM vans with the optional wheels. If I remember right they were like a 6 or 6.5" wheel where the pickups were 15x7's

Re: Factory Wheels
 

You could be right. They look a little narrow. Is the width stamped on the back? I would like to score a set of steelies with GMC hubcaps. Although that may be awhile. I got to get this thing running first.

Re: Factory Wheels
 

shambles:Yes, All GM Wheel are stamped most will be close to the valve hole 5"-10". Could be on front or back, But that style rim would be on the back.