At Rallye Lexus when we perform a service we always include a Multi-point inspection to check basic items like tires and brakes. After seeing how much low tire treads effect stopping a car, I changed how often I change the tires on my own wife's car. You be the judge after you watch these videos. I always used to think 4/32's was ok (new tires are around 10/32's) until I saw the difference in braking performance in the wet weather(NY State inspection requires at least 2/32's). You be the judge. If you need help in checking them stop by Rallye Lexus Service Department any time for a complimentary tire check and Lexus Multi-point inspection.