Warrnambool Tyreplus owner Stuart Bishop said the poor roads were “fantastic” for his business but “shocking” for motorists.
He said drivers were hitting the sharp edges on potholes and damaging their rims or tyres, or both.
“We’ve had some total blow-outs,” Mr Bishop said.
Woolsthorpe, Caramut, Nullawarre and Purnim were all reported black spots for damaging potholes.
“The roads are terrible.
‘‘It’s probably lucky the rain is later this year and we didn’t have these conditions in July.”
Mr Bishop told The Standard that a problem with modern cars was they had low profile tyres, meaning there was little room for forgiveness.
Another issue was that a large number of cars now came with space-saver wheels as spares, or worse, just a can of puncture sealant.
“They’re all right on Europe’s motorways, but not in Australia.
‘‘Some people do not even know their car doesn’t have a spare wheel.”
Les Lynch from Port Fairy Tyre and Battery Service also reported plenty of damaged rims.
“In the past 12 months it’s been really bad,” he said.
Mr Lynch said it was an expensive problem for car owners, with wheels costing between $150 and $300 to replace plus the cost of the tyre.
“It’s worse since this spate of rain which has exacerbated the situation.”