Have a '90 Honda Accord my wife had been driving, which I took over. She complained of noise, and it was quite loud at certain speeds - similar to a bad bearing roar. I checked for bearing problems, and found none, but by rotating wheels front/rear the sound seemed to shift its location a bit.
Since I didn't like the handling anyway with the Michelin MXV on 14" narrow steel rims, I replaced with wider 15" alloy wheels, and Yokohama touring tires. The noise disappeared completely - and handling is much better.
Tire problems may not be apparent on inspection. With 40k+ miles, the MXV's still had plenty of tread, and wear looked even.