1980 GMC C1500 Heavy Half Tire Sizes

Factory original equipment (OE) tire specifications.

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(7/16 & 1/2 inch studs)

Tire Size
P235/75R15
Load Index
Speed Rating

(7/16 & 1/2 inch studs)

Tire Size
LR60-15/B
Load Index
Speed Rating

(9/16 inch studs)

Tire Size
P235/75R15
Load Index
Speed Rating

(9/16 inch studs)

Tire Size
LR60-15/B
Load Index
Speed Rating