Continental AG’s North American unit is recalling about 391,000 tires, most of which were put on new Ford Motor Co F-250 and F-350 heavy duty pickup trucks, U.S. regulators said on Friday. About 330,000 were put on the new trucks, and some were sold as replacements, Continental said of the tires made in Mexico from May 2007 to September 2008. Ford spokesman Wes Sherwood said the tire recall affected 65,000 pickup trucks in the United States and Canada.