HAMILTON, Ont. -- A 49-year-old man is facing an impaired driving charge after a concerned citizen reported a strange vehicle being driven in a town west of Toronto.

The vehicle was missing a front tire.

Halton regional police say the driver was described as "oblivious to his surroundings" when confronted by the citizen on the Milton street Saturday.

An officer soon located the vehicle, which police say was being driven on just three tires and a rim, and the driver was arrested.

Police say the man gave a breath sample that showed a blood-alcohol level of more than three times the legal limit.

It's not known exactly how or when the tire came off the vehicle.