The 2002 Rio's wheels grow from 13-inch to 14-inch in diameter while the Optima is now coasting on 15-inch wheels. The size and output of the Kia Optima's optional V-6 engine are also improved for the ...

SEOUL, Oct. 2 (Yonhap) -- Hyundai Motor Co. and its affiliate Kia Corp. said Wednesday their combined sales in the United ...