When replacing a tire on the side of the road in the hood, it is common courtesy to leave your discarded tire by the side of the road so that, in an emergency, future motorists can use it. This is why there are so many seemingly abandoned tires along hood roads. Also, those who are in on the secret, use these tires as markers. They indicate safe haven for hood occupants.
Each tire typically has a protection radius of approximately one mile. So the hood tires also serve as makeshift mile markers.
Oh no honey we just got a flat tire. I guess we need to call triple A.
"No hun, we are in the hood. There are bound to be a "hood tires" within walking distance."
Another slang term for the Canadian hardware store "Canadian Tire", also known by most people as "Crappy Tire". "Shitty Tire" is used as a replacement noun in cases where the term "Crappy Tire" doesn't quite cut it anymore
Steve: "Hey, man, is your car still at Shitty Tire?"
Bill: "Yeah, they ripped all four of my tires and need to wait 2 weeks for new ones to come in, so I can't drive it until then"
Steve: "I wouldn't take my wheelbarrow to Shitty Tire"