"Shooting out the tires", much like "shooting the gun out of the perp's hand", is a Hollywood fiction.
My favorite line from a western was I think Joe Kidd,...when he was aiming for the desparado escaping in the distance, pulled out the rifle for a long shot,...seconds later the rider falls off the horse,....bystander remarks, 'That was a helluva shot!',...The shooter drowls,,...'not really, I was aiming for the horse...'