Frontenac OPP say a tractor trailer heading west on Highway 7 near Sharbot Lake had a set of wheels detach from it.
OPP sent out a photo of the detached wheels just before 5 p.m. on Monday.
No other vehicles were hit and there was no traffic disruption on Highway 7.
Police say charges are pending for an unsafe vehicle.
The Ministry of Transportation is also investigating the vehicle.