Craig Cawley was on the phone with police when he saw a tyre come rolling down a hill, across the road, smashing through his neighbour's fence and into her house.
It was not the first tyre he had seen rolling down the bank near Victoria Park as just moments earlier he witnessed one narrowly miss a vehicle travelling on Parsons Street.
Whanganui police are investigating several reports of truck tyres being rolled from the hill near Victoria Park towards Parsons St threatening vehicles and property.
Another traveller was not so lucky, with police confirming that they received a report from a driver at 8pm on Tuesday whose vehicle was hit by a stray tyre.
A caller to the Chronicle, who declined to be named, said somebody could be killed.