No shaking or vibrations. I heard the noise at low speeds while I was posting flyers for our lost dog. The best way I can describe it is if you had a flat tire and can hear the tire running asymmetrically. I hope that makes sense. I checked the tire, it isn't flat or low pressure and the wheel isn't bent. The noise is somewhat high pitched, maybe if you placed metal on the rotor and drove the car, at low speeds, less than 5 mph, it is barely audible, but at 20 mph it is somewhat high pitched and irritating.