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1979 Custom Green on Green 318
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What is the largest tire that will fit under a ‘79 RC. Factory stance? I just need to buy some used tires for now to hold me over for a couple of years during the restoration process.
I can find tires or wheel/tire sets. I know 31x10.5 R15 will work but about something larger?
 

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I have 33 12.5 on one of mine and they rub at full turn.
 
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I have 33 12.5 on one of mine and they rub at full turn.
Damn, I wanted that set up. I can’t lift it either because the clearance on the pole barn.
 

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All depends on spring setup and how old the springs are. 33 x 12.5's have fit on some peoples with no mods. With others they rub. I would go with 31s for now then if you replace springs or add one or two you can clear the 33's with ease.

Neil
 

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'79 Macho 360 Magnum, Comp 480 cam, Hughes springs, 650 Thunder AVS, Pertronix Flamethrower ignition
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What Neil said is true, it also depends on the tire manufacturer because not all brands are the same height even though they say they are. I had these Korean made no name brand tires that were 33"×12.5" and they fit fine on my truck with sacked out springs in the front. They only rubbed at full crank or at extreme angles.
 

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