But I brought the car in to Discount Tire to have their techs confirm my worst fears.
The rears have an inside ridge just starting to wear in.
The fronts are badly cupped, also inside, this what we are hearing as road roar.
The partial fix? Rotate per handbook than inspect at another 6k. If no help--- tires must be turned over on their rims.
Discount tech says rears will be saved, fronts are doubtful, but worth a try.
Smart folks must rotate tires at 10k or less...
So now I learn.

DUH!!

A2Jack.