There are 3 owner-reported tires & wheels complaints for the 2018 Hyundai Sonatain NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
the Kumho 205/65 R16 treads are losing chucks of rubber on 3 tires with just under 17000 miles as of this date 7/24/23 and under 6 years old. ( their warranty states 60K or 6 yrs) Kumho will not warrant the tires in any way shape or form. Have tried to get some help from them since Jan of this year (2023) with no results. Also the service dept at the dealership tried to get me help but was not successful. Even after taking many pictures and information and sending them to Kumho. No help.
The contact owns a 2018 Hyundai Sonata equipped with Hankook Tires, Tire Line: Kinergy ST, Tire Size: 205/65/R16, DOT Number: (N/A). The contact stated that three of the four tires had failed. While the vehicle was in for a Vehicle State Inspection, it was discovered that the rear passenger’s side tire was deformed and wobbly which cause the vehicle to fail the inspection. Additionally, while driving approximately 70 MPH, the vehicle started shaking violently. The contact pulled over to the side of the road and stopped the vehicle. Upon inspection, it was discovered that the rear driver’s side tire had experienced a blowout. Additionally, the third tire was discovered to be deformed. The cause of the failure was not determined. The tire dealer and manufacturer were notified of the failure. The failure mileage was 28,000.
DRIVING ON AN EXPRESSWAY AND TRAVELING APPROX 60MPH THE REAR DRIVERS SIDE TIRE BLEW OUT I DID NOT STRIKE A POT HOLE AND THE CORRECT TIRE PRESSURE AS PER THE DOOR PANEL WAS IN THE TIRE. I MANAGED TO GET THE CAR OFF THE HIGHWAY WITHOUT FURTHER INCIDENT.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 26, 2026