Original Tire size 1972 GMC K1500
Since the search function isn't working so hot right now, figured I'd throw up a topic for this one. My speedo is WAY off and I'd like to get it back to where it should be. Right now I have 33x12.5r15 tires on the truck, pretty sure it has the 3.08 gears. Can anyone tell me what the original tire size for these trucks was, so I can figure out exactly where the speedo should be?
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1972 GMC K1500 350 V-eight TH350 4x4.
Last edited by Batman; 09-28-2009 at 01:13 PM.
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