1989 GMC C1500 Tire Sizes

Factory original equipment (OE) tire specifications.

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Sierra (GVWR 5600)

Tire Size
P225/75R15
Load Index
Speed Rating

Sierra (GVWR 6100)

Tire Size
P235/75R15
Load Index
Speed Rating

Sierra SLE (GVWR 5600)

Tire Size
P225/75R15
Load Index
Speed Rating

Sierra SLE (GVWR 6100)

Tire Size
P235/75R15
Load Index
Speed Rating

Sierra SLX (GVWR 5600)

Tire Size
P225/75R15
Load Index
Speed Rating

Sierra SLX (GVWR 6100)

Tire Size
P235/75R15
Load Index
Speed Rating