This sickening video clip has emerged showing a shocking moment as a runaway tyre slams into the back of a man’s head.

The tyre comes bouncing across the road from an unseen vehicle, before slamming into the man sending him to the ground.

Before this bizarre incident, the couple are seen casually walking along the road blissfully unaware that a huge tyre is heading towards them.

The man from Brazil has survived the accident, but was left with a fractured head and chest, which he is now recovering from in hospital.