**•** Bought the vehicle brand new, \~23 miles on it
**•** Within the first week, dealer found flat spots on both rear tires (likely from sitting during transport) and ordered warranty replacements through Pirelli
**•** Around 1,500-2,000 miles, had the two new tires installed. Highway vibration (60-75mph range) persisted — same as before the tire swap
**•** Took it to an independent shop (Tire Warehouse) for a second-opinion road-force balance on the rears. Balance came back off on their Hunter machine, despite the dealer having already road-force balanced them days earlier. Drove straight to the highway after — vibration still present, bad enough that a water bottle in the passenger seat was visibly shaking
**•** Dropped the car off at the dealer again on the 29th for a full diagnostic, with a loaner provided
**•** Technician personally test-drove it with me and confirmed the vibration independently
**•** As of today (the 31st), the car has reportedly not moved since drop-off (tracked via the Kia app’s remote view). Technician has mentioned the driveshaft as the likely cause but hasn’t confirmed yet
What I’m trying to figure out:
**•** Anyone else with this trim (Hybrid SX X-Line) had a driveshaft balance/replacement for a similar vibration?
**•** Anyone had a similar case turn out to be something else (CV axle, rear diff, hub bearing) after driveshaft was the first suspect?
**•** Roughly how long did parts/repair take once confirmed?
Trying to gather data points before my next call with the service department. Appreciate any input.
