Vibration 45-50

jpl572103 said
So after more testing here is what I found. The vibrating issue is not really noticable until after a few miles of driving. Then it just creeps up while drving 45-50mph. I thought the vibration was gone when putting in N, but this time I got the car to 55 with the vibrating happening. Put in neutral and turned engine off. Vibration didn’t change. I think I’m going to get the tires checked for balance to start with. The good news is that it's a great grocery getter/around town car in the 25-40mph range.

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Yep, tires, driveshaft, ujoint or loose yoke on the differential.
Tires is easiest to start.
Dont forget you can put it on stands to check things.
Spin the tires in the air at speed.
If you don’t find it put the fronts on the back and test again.

That is how I go about things, but obviously you can take it and get it checked if you like that better.
Done that before.

But you are learning diagnostics in the process either way.