Ford Motor Co. is issuing a safety recall for select 2021 F-Series Super Duty vehicles with dual rear wheels.

Affected vehicles are equipped with front-wheel hub extenders "that were not properly tightened," according to Ford.

"This condition may result in the tire and wheel assembly detaching from the front axle, increasing the risk of a crash."

The recall impacts 17,616 vehicles in the United States, 1,779 in Canada and 231 in Mexico.

The Ford reference number for the recall is 21S26.