"This was more than a childish act, this was done by someone with stupid intentions. This had the potential to cause a fatality.
"If it rolled on a corner on the Brynderwyns or worse still hit someone head-on it could have been catastrophic. They might have thought it was humorous but what would they think if it was their family in the other car?"
Salter said they must have used some force to stab the tyre as it was constructed to withstand 8 tonnes of weight and the force of the pressure in the tyre - 120psi compared to a car tyre of 30psi - could kill.
He hoped by speaking out about the potentially fatal damage done to the tyre it might trigger a memory of someone who might have seen something suspicious.
"I hope they catch them. I would just like to see it stop. The community needs to identify who they are and the police need the tools and the help to find them."
• If you can help police identify those responsible, contact Crimestoppers on 0800 555 111, or David Hamilton at Whangārei police station on (09) 430 4500.