Ok, 1500 miles on the Falkens, they drive straight and track nice.
But, starting at ~ 45 MPH I get a "thrum" with a 1 1/2 second period. What I mean is it goes "thrum...thrum...thrum...".

And it is felt more than heard.

It can be seen in the rear view mirrors.


It DOES NOT change with speed.
It DOES NOT do it on all road surfaces.
It DOES NOT shake the steering wheel.
IT DOES NOT seem to be tire hum.
It feels like it might be coming from the rear.
I have had all 4 re-balanced. No change.

I will (finally) install the stabilizer in the morning to see if there is any change.

And I'll slip it into Neutral at 70 to see if there is any change too.

It's the strangest thing...

I respectfully wait for any help?