The shocking state of tyres people are driving on has stunned Taupo police.
Senior Sergeant Fane Troy of the Taupo Area Road Policing Group said local tyre shops had approached police after noticing some "shocking" tyres on cars coming in.
Mr Troy said the tyres - a number of which were worn on the inside down to the canvas and steel belts - were at a high risk of failure.
He said they posed a major risk and if they failed when the vehicle was travelling at 100km/h they could cause a major crash.
Mr Troy said all owners and drivers should check their vehicles before making any journey, long or short, on the roads in the new year.