TL* THE CONTACT OWNS A 2018 MERCEDES-BENZ GLA250 EQUIPPED WITH BRIDGESTONE DUELER H/L 400 TIRES, SIZE: 235/50R18 (NA). WHILE DRIVING 30-35 MPH, CHUNKS OF TREAD STARTED TO SEPARATE FROM THE TIRES WITHOUT WARNING. THE VEHICLE WAS TOWED TO THE CONTACT'S RESIDENCE. THE FAILURE WAS NOT DIAGNOSED OR REPAIRED. CARMAX (8611 S LA CIENEGA BLVD, INGLEWOOD, CA 90301, (310) 568-9272) WAS INFORMED, BUT UNABLE TO ASSIST. THE MANUFACTURER WAS NOTIFIED. THE VEHICLE FAILURE MILEAGE WAS 10,580. THE TIRE FAILURE MILEAGE WAS UNKNOWN. *BF*JB