Why does my steering wheel on my 2008 KIA Optima vibrate when I go over 60-65 mph?

yep, 3 years is a long time. i think you have a bad tire. did you ever rotate the tires and see if there was a difference?? have you ever aligned the front end?? Roy

To add to Roy - I'm thinking wheel balance all the way. But as Roy mentioned - have you rotated your tires at all? If not, certain wear patterns may have worn into the tire that are unavoidable.