GMC C20 Tire Sizes

Here is a list of GMC C20 tire sizes, including the correct sizes for each year and model.

1978 GMC C20 Tire Sizes

Submodel	Tire Sizes
Pick-up 2wd	7.5R16 (front) 8R16.5 (rear) 8.75R16.5 (front)

1979 GMC C20 Tire Sizes

Submodel	Tire Sizes
Pick-up 2wd	7.5R16 (front) 8R16.5 (rear) 8.75R16.5 (front)

1980 GMC C20 Tire Sizes

Submodel	Tire Sizes
Pick-up 2wd	7.5R16 (front) 8.75R16.5 (rear) 9.5R16.5 (front)

1981 GMC C20 Tire Sizes

Submodel	Tire Sizes
Pick-up 2wd	7.5R16 (front) 8.75R16.5 (rear) 9.5R16.5 (front)

1982 GMC C20 Tire Sizes

Submodel	Tire Sizes
Pick-up 2wd	215/85R16 (front) 235/85R16 (rear)

1983 GMC C20 Tire Sizes

Submodel	Tire Sizes
Pick-up 2wd	215/85R16 (front) 235/85R16 (rear)

1984 GMC C20 Tire Sizes

Submodel	Tire Sizes
Pick-up 2wd	215/85R16 (front) 235/85R16 (rear)

1985 GMC C20 Tire Sizes

Submodel	Tire Sizes
Pick-up 2wd	215/85R16 (front) 235/85R16 (rear)

1986 GMC C20 Tire Sizes

Submodel	Tire Sizes
Pick-up 2wd	215/85R16 (front) 235/85R16 (rear)

1987 GMC C20 Tire Sizes

Submodel	Tire Sizes
Pick-up 2wd	215/85R16 (front) 235/85R16 (rear)
R20 Pick-up 2wd	215/85R16 (front) 235/85R16 (rear)

1988 GMC C20 Tire Sizes

Submodel	Tire Sizes
Pick-up 2wd	225/75R16 (front) 245/75R16 (rear)

1989 GMC C20 Tire Sizes

Submodel	Tire Sizes
R2500 Pick-up 2wd	225/75R16 (front) 245/75R16 (rear)