- Z28: P225/70R15
- Sport Coupe: P215/75R15
- LT Sport Coupe: P235/75R15
- Rally Sport (RS): P225/70R15
It's worth noting that these are just a few of the possible tire sizes that may have come with a 1978 Camaro. If you're trying to determine the exact tire size for a specific 1978 Camaro, it's best to refer to the vehicle's original specifications or consult with a knowledgeable mechanic.