Goodyear Tyre & Rubber Co.'s first-quarter loss widened despite a 7% increase in sales, as the company's operations were dragged down by poor results at its North American unit. The company reported a net loss of $163.3 million (93 cents per share) for the first quarter of 2003, compared with a net loss of $63.2 million (39 cents per share) in the first quarter of 2002.