Can you run 31/10.5/15 on 15x6 rims?

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79dentside

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Brandon
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1979
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GMC Sierra Classic
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350
Hey all, I’ve been flipping a coin on either 31/10.5/15’s or 32/10.5/15’s on my 2wd 1500. I’m a fan of the dog dishes so I found a set of dog dish 1/2 ton wheels, BUT I looked online days later and saw that it would be unsafe to do 31/10.5/15’s on 15x6 wheels and almost sold them off.
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Before I scrap these things, I think I want to buy 31/10.5/15’s to put on the truck, can I do it on these 15x6’s??? I just want to see what you all have done and if they hold up. The truck is geared to the moon so I absolutely do NOT drive this thing in the highway. It either has 4.11’s or 4.56’s with a 3-speed.

This is more or less a last minute clarification, I would like to run these wheels.
 
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mcarlo86

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I'm pretty sure there were some pickups with heavy duty brakes that had either 15X7 or 15X8 dog dish wheels. I don't recall for sure if they were 7 or 8" wide, but I do know they were wider than the standard rims. Big 10's probably? My dad had a '79 C10 like that. I would think those rims would be out there to find at a wrecking yard. They would look better with the 31X10.50's too.
 

79dentside

Full Access Member
Joined
Nov 20, 2019
Posts
369
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384
Location
Kansas
First Name
Brandon
Truck Year
1979
Truck Model
GMC Sierra Classic
Engine Size
350
I'm pretty sure there were some pickups with heavy duty brakes that had either 15X7 or 15X8 dog dish wheels. I don't recall for sure if they were 7 or 8" wide, but I do know they were wider than the standard rims. Big 10's probably? My dad had a '79 C10 like that. I would think those rims would be out there to find at a wrecking yard. They would look better with the 31X10.50's too.

I’ve been on the hunt for some and I just can’t find any. I have a “Heavy Half” (GMC version of Big10) and mine has the 15x8 rally wheels.. who knows if they are the original one after 41 years.
 
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