Tillie

I discovered when having my last oil change that I needed to replace my tires, 19,000 (Yokahama). Mine have worn bad on inside also. Would it be a waste of time to take this problem up with Lexus? I'm thinking about the Michelin Pilot Sport AS. My son-in-law says I don't have to put a sport tire back on it. I am concerned that the tire sensor will not work correctly and the hazard light will always be on. Does anyone know the mileage you may expect with the Michelin?