Hi Scotty just want to say your videos have helped me multiple times and I like how you make them very quick and to the point. I have a 2009 mustang and I hear a rumbling sound when I’m driving 45 or more. The only way I can describe the sound is it sounds like normal tires rolling but louder. The tires are only a few months old and I got them balanced not even a week ago because I thought that was the problem. I replaced both front wheel bearings when I first heard the sound and it went away. Then about a month later it came back again so I assumed it was the rear axle bearings so I replaced both of them and their seals and put new differential oil fluid in. The noise is still there so I’m thinking it’s now a bad U joint or what could be another possibility just so I can diagnose the problem and fix it. Thanks a bunch keep it up!