 Shares of Goodyear Tire Rubber Co. GT, -4.96 rose 0.7 in premarket trading Friday, even after the tire marker reported first-quarter profit and sales that beat expectations, while gross margin contracted as cost of sales growth outpaced sales growth. Net income rose to 96 million, or 33 cents a share, from 12 million, or 5 cents a share, in the year-ago period. 