2026 Nissan Frontier

I own a new 2026 Nissan Frontier PRO-4X equipped with the original Hankook Dynapro AT2 tires. Shortly after purchasing the vehicle, I began experiencing a noticeable vibration at highway speeds, primarily between approximately 70 and 78 mph. The vibration is most noticeable around 72-74 mph and can be felt through the vehicle, particularly through the seat. I brought the vehicle to a Nissan dealership for diagnosis. The dealer determined that one of the tires had an issue they described as a broken or defective internal belt. During road-force balancing, the affected tire measured approximately 41 lbs of road force, which is significantly higher than expected. The tire was still relatively new and was original equipment on the vehicle. I contacted the tire manufacturer regarding warranty replacement, but Hankook would not authorize replacement without the tire first being removed and returned for inspection. I was told I would need to purchase a replacement tire myself and then potentially seek reimbursement after Hankook inspected the defective tire. My concern is that an internal belt defect in a nearly new original-equipment tire could present a safety risk, particularly because the problem becomes apparent at normal interstate highway speeds. The vehicle has not been involved in an accident or impact that would reasonably explain this type of internal tire damage. I am submitting this complaint so NHTSA is aware of the potential tire defect in case similar failures are occurring on other vehicles equipped with these tires.

Aftermarket vehicle equipment (Rough Country Hard Tri-Fold Flip Up Bed Cover, SKU: 49520551A) suffered a catastrophic structural hardware failure while traveling at highway speeds (approx. 70 MPH) on the interstate. Both the primary latching clamps and the factory-installed secondary safety retention straps failed simultaneously under standard operating conditions. The entire cover detached from the vehicle and launched into the roadway, creating an immediate, severe collision hazard for trailing motorists. Physical inspection of the truck bed afterwards revealed the mounting rails remained securely attached to the truck, but the integrated screw-handle anchoring hardware on the cover itself had completely failed and sheared off.