No noise, just a 'bump' - maybe a 'tug'. 2-3 per second holding the wheel slightly to the left at 60mph, correcting from 'wiggle'. No bump while moving the wheel the few degrees to correct, just when I stop moving it and hold it to continue the correction. Stops when I move the wheel back to straight ahead, and does not 'bump' while steering straight ahead. No 'bump' when I turn or hold the wheel to the right.