Road/tire noise.

[MerlintheMad]

So I took my car in to the dealership and they couldn't find anything wrong with the tires and suspension. I will say that while I was driving around with a technician in the car the aforementioned tire noise seemed to minimize significantly and essentially dissipated. The dealership is located on the north side of town and the roads up there are very well paved and maintained, unlike the south side where all the roads are garbage. It seems like I can only really hear the "hollow" sound when I am driving on uneven/bad roads, and it sounds like someone is blowing over a glass bottle.

Is it possible that the sound is normal based on the thin nature of the Michelin PS4s? What's strange is that the noise only comes from the front of the car, and whenever I go over roadbumps, I only hear the hollow noise from the front set of tires, with the noise being more apparent on the front right tire.

In terms of driving the car I am not noticing any steering wheel vibrations (unless I am turning/braking on shitty roads) and not feeling any pull - so I believe the dealer that everything is sound with my suspension at least.

With that being said, should I go to another dealer to get a second opinion?

That's what "they" always say about medical opinions: "get a second opinion". I suppose it could apply to Noises that are On/Off. "Do you hear that?" And if the answer is negative, well, there you go.

 

[StingsLikeABee]

There is definitely a sound and at times I can feel vibrations in the wheel, brakes, floor. Other times the ride runs smooth, it all depends on the road.

 

[Ozstung]

There is definitely a sound and at times I can feel vibrations in the wheel, brakes, floor. Other times the ride runs smooth, it all depends on the road.

What tyre pressures are you running?

 

[StingsLikeABee]

Dealership over-inflated my tires with them showing 38f/42r psi. My b pillar stated 36 psi for both tires (225/40ZR19 front, 255/35ZR19 rear). It wasn't until I was ~700 miles in until I noticed and they are at the correct pressure now. By then the hollow sound had developed and it is still there.

 

[MerlintheMad]

Dealership over-inflated my tires with them showing 38f/42r psi. My b pillar stated 36 psi for both tires (225/40ZR19 front, 255/35ZR19 rear). It wasn't until I was ~700 miles in until I noticed and they are at the correct pressure now. By then the hollow sound had developed and it is still there.

Don't overthink this. There is no way that such a small amount of "over inflation" is going to produce any change in noise audible to the human ear. Or ride quality either. Kia must have changed the psi recommendations on the staggered 19" wheels, because my tag says 38 front, 36 rear.

 

[StingsLikeABee]

Don't overthink this. There is no way that such a small amount of "over inflation" is going to produce any change in noise audible to the human ear. Or ride quality either. Kia must have changed the psi recommendations on the staggered 19" wheels, because my tag says 38 front, 36 rear.

I'm pretty sure overinflation had nothing to do with my issue, rather it has to do with suspension/balancing. The sound has gotten worse and it literally sounds like someone is straight up blowing over a glass bottle. I can also feel vibrations on my steering wheel and moreso on the brake pedal when the noise is intense.

Something is definitely wrong and frustrating that my dealership couldn't identify the source.

 

[MerlintheMad]

I'm pretty sure overinflation had nothing to do with my issue, rather it has to do with suspension/balancing. The sound has gotten worse and it literally sounds like someone is straight up blowing over a glass bottle. I can also feel vibrations on my steering wheel and moreso on the brake pedal when the noise is intense.

Something is definitely wrong and frustrating that my dealership couldn't identify the source.

This is starting to sound like a description of electronically monitored suspension seizing up. Sometime last year (I think) there was a case of EMS seizing up, for lack of a more technical term. The entire car felt jarringly solid. Iirc, the issue went away when the entire ECU was reset.

 

[StingsLikeABee]

My car is a baseline GT, so I don't think I have the ECS. Here's a snippet of the sound when I cross over a speed-bump. You can hear a sort of hollow sound when my front wheels go over. That sound is what I hear in a steady form on 85% of my drives with various intensities, depending on the roads.

 

[MerlintheMad]

My car is a baseline GT, so I don't think I have the ECS. Here's a snippet of the sound when I cross over a speed-bump. You can hear a sort of hollow sound when my front wheels go over. That sound is what I hear on 85% of my drives with various intensities, depending on the roads.

Well, I'm out of any suggestions. My asserting that you're just "too sensitive" won't help a danged thing!

 

[G-826678]

I guess I am going insane then

 

[StingsLikeABee]

Maybe I am going crazy or just too noise-sensitive, idk. Kinda bummed about it

Dealer said that the noise was from the tires (Pilot S4s) and they checked my tires, alignment, and suspension - All were good. Additionally, they swapped the front tires but the noise was still there. I just didn't think that it was normal that a hollow noise emits from the front but not the back but I guess that's the nature of the tires, they have been noisy overall.

I really love this car but this noise is a huge detriment to my enjoyment.

With that being said, how are those Nitto Motivo UHPs?

 

[MerlintheMad]

With that being said, how are those Nitto Motivo UHPs?

Quiet. I first noticed that they were quieter than the PS4 when I changed to the Motivo; and smoother riding too. So, after a long "summer" of back to riding on Michelins, I fully expected to notice this subdued noise and softer ride again last fall. Oddly, any change was probably subjective only. I'll be switching back to the Michelins again in a couple of weeks, and I'm definitely primed to notice any ride and noise difference at all after four months on the Motivos.

 

[StingsLikeABee]

Quiet. I first noticed that they were quieter than the PS4 when I changed to the Motivo; and smoother riding too. So, after a long "summer" of back to riding on Michelins, I fully expected to notice this subdued noise and softer ride again last fall. Oddly, any change was probably subjective only. I'll be switching back to the Michelins again in a couple of weeks, and I'm definitely primed to notice any ride and noise difference at all after four months on the Motivos.

Nice, please report back! Especially if you hear a "hollow blowing over glass bottle" noise

 

[G70 Owner]

My car is a baseline GT, so I don't think I have the ECS. Here's a snippet of the sound when I cross over a speed-bump. You can hear a sort of hollow sound when my front wheels go over. That sound is what I hear in a steady form on 85% of my drives with various intensities, depending on the roads.

Whoa so not normal. Maybe a leak in your shock? A defective tire? Idk but something is wrong with that sound

 

[StingsLikeABee]

Whoa so not normal. Maybe a leak in your shock? A defective tire? Idk but something is wrong with that sound

I don't know but my dealership claims that nothing is wrong. Is there a way I can self check a shock leak or defective tire?

Edit: Can only certain people hear this sound?

 

[G70 Owner]

I don't know but my dealership claims that nothing is wrong. Is there a way I can self check a shock leak or defective tire?

Edit: Can only certain people hear this sound?

It’s just dealership techs doing what they do, even Genesis has this problem. Drive over the speed bumps and hit it with one tire at a time. Can you isolate if it’s coming from a single corner or what? That could help narrow down the issue

 

[StingsLikeABee]

So I have determined that it is mostly isolated to a single corner, the front right side. This was the case prior and after the front tire swap, which makes me think it might not be the tires.

 

[G70 Owner]

So I have determined that it is mostly isolated to a single corner, the front right side. This was the case prior and after the front tire swap, which makes me think it might not be the tires.

Sounds suspension related. Maybe a 3rd party shop can take a look for free for you?

 

[terraform848]

Double post

 

[StingsLikeABee]

Someone suggested that the noise sounds ”springy”, like the shock is allowing the spring to oscillate. Does this sound accurate?

I also noticed my car is starting to pull to the right a bit at certain times