Vibrating on driver side

I have a 02 Toyota prerunner and the ride is smooth up to around 50 mph then around 55 it's starts vibrating from what feels like the driver side front end. After talking with my dad he said it may need an alignment but I want to get other options.

 

Alignment doesn't cause vibration.

Tire balance does.

Rotate the tires on that side and see if the vibration moves to the rear. If so, you found your problem.

If not, the problem is deeper and will need a professional look see.

 

^This.

 

Thanks guys I'll take rotate them this weekend and see if it moves.

 

Just make sure your wife and or girlfriend sits on that side. I doubt they would complain any.

 

Thanks "Ted" reference there and I'll make sure to let her drive for once