Grinding and tremors when slowing (both by applying breaks and by coasting).

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I can feel tremors in the pedal and steering wheel when brakes are applied. At slow speeds coasting or with brakes applied there is an intermittent grinding noise (grr..grr..grr) and a kind of "thup thup thup" sound. Also at slow speeds, the grinding noise becomes continuous when I turn the wheel. I suspect the wheel bearings. The tires are just a couple months old and should be aligned. I replaced one front rotor just to check, no difference. Thanks