2026 Kia EV9 Wheels Problems

“The OEM Hankook iON tires (285/45R21) on my 2026 Kia EV9 GT Line experienced acoustic foam delamination — the sound-dampening foam bonded to the interior liner of the tire separated and is moving freely inside the tire at highway speeds. At speeds above 55mph the steering wheel and car start to vibrate. At 70mph the vehicle becomes undrivable and feels as though the wheels may detach. This creates a serious and immediate safety risk to myself. I have largely avoided highway driving since the onset of this issue due to safety concerns. …”

“Since taking delivery on June 20, 2025, this vehicle has exhibited a vibration at highway speeds, most severe at approximately 72 mph. The steering wheel visibly shakes and the vibration is felt through the steering column. It is fatiguing over long drives and I have become unwilling to use the vehicle for family highway travel. I reported it to the selling dealer within days of delivery. Authorized Kia dealers have attempted repair four times over thirteen months, including tire replacement, multiple road force balances, and alignments. …”

“I am reporting a total of 6 failed lug bolts on the rear tires of a 2026 Kia EV9 GT-Line within 1 year of ownership. This vehicle was purchased in Aug 2025 as a new vehicle from a Kia dealership. In March 2026, vehicle was brought for it's 8000 miles service at a Kia dealership. At the time the vehicle had 9336 miles. During tire rotation, service technicians found passenger rear wheel to have a broken lug stud. From the service records, No evidence of outside influence. This was replaced with new. Prior to this, the passenger rear tire was never serviced. …”