The Hankook tires are straight up trash. That's a good place to start.I have a 2018 GT Sport. Any advice on how to reduce road noise inside? At 60+ mph It is so noisy I can barely have a conversation. Unfortunately I am driving on rough SC highways, so that doesn’t help. I have Hankook Ventus S1 tires. Thanks.
Do you have a manual or DCT? C&D said that the 6MT was noisy on the freeway. I have a 7DCT and it is not loud on road trips (even with the sport exhaust), so I assume the 1.6L is a bit buzzy at higher RPMs.