What is stock tire size for 1978 Chevy k20 pickup?

The stock tire size for a 1978 Chevy K20 pickup typically ranged from 7.50-16 to 8.00-16, depending on the specific model and configuration. Many owners also fitted larger tires, such as 31x10.50R15 or 33x12.50R15, especially for off-road use. It's advisable to check the vehicle's specifications or the owner's manual for the exact size suited to your specific configuration.