I have noticed pretty major vibrations when driving my truck between 50-60-ish MPH. Once I get past 60-ish MPH, the vibrations seem to die down a bit. When I slow down the vibrations become more noticeable again, until I drop below 45-ish MPH. I am looking for all advice to help me with this issue. Thanks in advance!

 

Had your wheels balanced lately?

 

Looks like it was a wheel that was out of balance. It's crazy, that I had a blow out on my way to Nebraska and I put my spare tire on and the vibration went away.