1st step is to have you're front end aligned. That will tell you what needs to be replaced if any and correct you're directional problem. 2nd, have all youre tires rebalanced,thats teh most common cause of vibration at speed.

2000 KIA Sportage 4x4, Sadly Smushed! Now a 2001 Cheep Jerokee. 3" Rough Country Lift, 255/70/16 General AT2's