Two car tyres speared off Mount Buninyong on Wednesday afternoon, smashing into a shed at the base of the mountain, which is owned by Coral Loader and her family.

Ms Loader, who was home at the time, said it was a miracle no-one was hurt as the tyres, complete with metal rims, came to rest in the front garden after smashing into the side of the shed.

It left a large dent near the roof, bending metal poles inside which now need to be replaced.

“The whole shed shook, I thought it was an explosion,” she said. “As I came out, people came running thinking I’d blown myself up because I’d just put petrol in the mower.

“Then I was told a wheel had just gone by and ended up in the hedge. So it must have hit and then gone over the top. It’s come straight through and you can see a trail up the hill where it’s rolled.”

It’s not the first time residents at the base of the hill have been hit with flying missiles with neighbours reporting tractor tyres rolling down the mountain, narrowly missing horses and sheep.

Ms Loader said she also had a bucket full of golf balls, which she initially suspected had come from crows dropping them, but now believes have been hit from a clearing about 700 metres up the mountain.

Senior Constable Sean Almeida said the top of the mountain was often a problem area. 

“We don’t know who’s doing it for one but there’s a whole lot of stuff thrown off either from the tower or the clearing, everything from tyres, to even computers have come off the mountain,” he said.

“At some point of time something incredibly serious is going to happen. Given the force it’s going to come down, if it hits someone it would have killed them.”

Anyone with information is asked to contact Crime Stoppers on 1800 333 000.