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Old 08-03-2015, 10:52 AM   #14
1976gmc20
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Join Date: May 2015
Location: Montana
Posts: 3,696
Re: More durable 15" tires

Quote:
Originally Posted by special-K View Post
I think I'd stay away from the '88-type wheels. For one, they have serious backspacing and probably won't even work. The 8-lugs have less but still inset quite a bit on an earlier truck. Your Ideal wheel would be the GM 16s. Not easy to find, but worth the effort I'd say
Sigh ......

The 88+ pickup wheels will absolutely not fit on the solid axle suburbans/pickups. The wheel hits the tie rod end on the steering knuckle before it ever comes close to seating on the hub, even though the bolt pattern is correct.

Stupidly, I didn't realize that until I had the centers cut out of a set of five steel junkyard wheels (I should have just done one and tested it)

In the meantime, I bought a beat up 1989 K1500 for a firewood truck. It of course uses the same type of steel wheels as the ones from the junkyard.

So my extra credit question for you was if you thought the 16" junkyard wheels with the cut out center holes would be safe to use on the 1989 K1500 pickup at least as spares ???



As far as the "GM 16s" that you speak of - before 1988 I hadn't seen a GM 6-hole 16" wheel since the 1950s. I had a pair of those with mud/snow tires on them that I bought used for the 1965 C-10 that I used to have. As I recall, those will fit on the rear of a 1971+ K10 but not on the front, because of the disc brakes. Of course I don't have any of those anymore, but I remember playing musical wheels for spares.

If GM made special order 6-hole 16" wheels during the 1970s and/or 1980s, I've never seen one.
__________________
Current/past Chevy/GMC trucks:
1958 Chevy C-60; 1965 GMC C-50; 1965 Chevy C-10; 1971 Chevy K-10; 1973 Chevy K-20; 1976 GMC C-20; 1977 Chevy C-10 Suburban; 1980 Chevy K-10; 1989 Chevy K1500; 1991 GMC V1500 Suburban; 2016 Chevy K2500 HD

Other vehicles: 1988 Jeep XJ; 2011 Toyota 4Runner
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