NHTSA Complaint #11566415 — 2016 PIERCE ARROW XT

The center portion of the tire tread is separating from the tire bed. The tire was mounted on a 2016 Pierce aerial fire truck in the left rear inner position .The discrepancy was found on a pre trip inspection for a test drive. We have consulted with a tire consultant ( Tennent, Winkelman and Associates) and believe that the rubber components are not fully cured. The rubber of the tread bed is of a soft and semi sticky constancy when physically touched. There where no warning lights as to the discrepancy, tire pressure at time of discovery was 110 psi. This was the only tire on this piece of equipment to have any discrepancy. Tire model M870 size 315/80R22.5 load range L. The tire is available for inspection by appointment.