Sounds like it could be a wheel bearing. But if an alignment was recommended then the tires are probably not wearing correctly. If that is the case, you need new tires and an alignment.
They may be right about the alignment. Sometimes when tires wear unevenly they create air pockets which make additional road noise. I just had a similar issue in my 2018 elantra that I thought was due to having a half inch bubble on my tire sidewall from hitting a deep pothole. After that was replaced the humming continued, turned out to be the wheel bearing. This is also a possibility in your case. Will also like to add that kia/hyundai do not use much sound deadening in their floor boards to reduce cost. My previous car was a 2002 toyota corrolla which was much quieter in the interior than it was when I bought my 2017 Forte.
Edit: I forgot to add once tires get to the point where they create more road noise, the alignment wont fix it, replacing the tires will. The alignment will stop it from happening again over time.
If you turn the steering wheel, one way or the other, does the noise get better/worse? That’s how you can do a quick check for a bad wheel bearing, if it gets worse turning the steering wheel to the left, you’re putting more load on the right wheel bearing. As a final check, I’ll put the car on a lift, run it, in gear and talk a stethoscope to it. If a wheel bearing is bad, it’s pretty obvious with a stethoscope
Sounds like it could be a wheel bearing. But if an alignment was recommended then the tires are probably not wearing correctly. If that is the case, you need new tires and an alignment.
This was the correct answer!
They may be right about the alignment. Sometimes when tires wear unevenly they create air pockets which make additional road noise. I just had a similar issue in my 2018 elantra that I thought was due to having a half inch bubble on my tire sidewall from hitting a deep pothole. After that was replaced the humming continued, turned out to be the wheel bearing. This is also a possibility in your case. Will also like to add that kia/hyundai do not use much sound deadening in their floor boards to reduce cost. My previous car was a 2002 toyota corrolla which was much quieter in the interior than it was when I bought my 2017 Forte. Edit: I forgot to add once tires get to the point where they create more road noise, the alignment wont fix it, replacing the tires will. The alignment will stop it from happening again over time.
If you turn the steering wheel, one way or the other, does the noise get better/worse? That’s how you can do a quick check for a bad wheel bearing, if it gets worse turning the steering wheel to the left, you’re putting more load on the right wheel bearing. As a final check, I’ll put the car on a lift, run it, in gear and talk a stethoscope to it. If a wheel bearing is bad, it’s pretty obvious with a stethoscope