I have a 2006 Wrangler sport x TJ with a 6 speed transmission and when I'm in fifth gear going 45 mph the steering wheel will shake. When I speed up to 50mph or when i slow down to 40mph it goes away. When I'm in fourth gear going 45mph the steering wheel doesn't shake. I'm just wondering if I should get it looked at or if its no big deal. I would appreciate any help, thanks.