"The holes are that deep that they're just destroying the tyres."It's happened once before where we've had a series of potholes that have caused a major issue for weeks, and it's just happening again."He blamed the problem on a failure to properly maintain roads."The roads, they're not getting repaired properly We're getting patch jobs and the patches are just removing themselves in the weather," Mr Gridley said.The department issued its warnings shortly after 7am and by 10am, most vehicles had been repaired or towed.At nearby Warragul, the Bureau of Meteorology has recorded about 15 millimetres of rain since last night. In November, more than 20 cars were damaged when they struck a large pothole on the Princes Freeway at Nar Nar Goon.Potholes have become a major state political issue, with the government promising $1 billion for pothole repairs in this year's budget.The Coalition has also pledged $5 billion to repair and rebuild the state's roads if it wins the November state election.