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Brake pad and rotor noise or wheel bearing?


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My Fusion has 121K miles and brake pads have never been done so I know they are close to needing it. There is also a bit of rotor warpage in the front when you come to a low speed stop you can feel a bit of hit/miss. I've had some road noise coming from the left front. Which is rotational, almost like a flat spot on a tire. New tires and front end alignment but the noise is still there. Appears to be getting more noticeable. Took it to the dealer and they "didn't hear anything". They checked the suspension and wheel bearing and everything seemed "solid." But... The noise seems more pronounced when in a curve in either direction. Thinking of trying a different dealer. Does this seem like the type of noise that could be caused by worn pads and rotors? Or is it more likely the wheel bearing?

 

Appreciate your thoughts.

Edited by con_fusion
typo
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1 hour ago, con_fusion said:

My Fusion has 121K miles and brake pads have never been done so I know they are close to needing it. There is also a bit of rotor warpage in the front when you come to a low speed stop you can feel a bit of hit/miss. I've had some road noise coming from the left front. Which is rotational, almost like a flat spot on a tire. New tires and front end alignment but the noise is still there. Appears to be getting more noticeable. Took it to the dealer and they "didn't hear anything". They checked the suspension and wheel bearing and everything seemed "solid." But... The noise seems more pronounced when in a curve in either direction. Thinking of trying a different dealer. Does this seem like the type of noise that could be caused by worn pads and rotors? Or is it more likely the wheel bearing?

 

Appreciate your thoughts.

 

Hi con_fusion. Blind Internet diagnosis: Generally speaking, if it makes the sound when not applying the brakes, it would tend to point to a possible wheel bearing issue. If it only makes the sound when the brakes are applied, that would tend to point to a possible brake issue.

 

Hopefully one of our tech members will jump in with some expert advice. Let us know how you make out and good luck.

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  • 4 months later...

I wanted to give an update on my Fusion. I went ahead and replaced the front rotors and pads with new Motorcraft parts. Still heard noise > 50 mph that sounded like a wheel bearing on the left front. Had the dealer check again. They didn't really hear it. I kept driving it but it still seemed noisy. I took it to an independent mechanic and they checked it. They think everything is solid and don't see a bearing issue. They said it's safe to drive. They feel the noise is coming from the tires which are Michelin Pilot Sport A/S 3+. Same tires I had before. I know some of you have had those tires, do they seem excessively noisy to you?

 

I'm not sure I'm convinced it's the tires but I guess time will tell. There has been no vibration or instability at all when driving.

 

Thanks

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1 hour ago, con_fusion said:

I wanted to give an update on my Fusion. I went ahead and replaced the front rotors and pads with new Motorcraft parts. Still heard noise > 50 mph that sounded like a wheel bearing on the left front. Had the dealer check again. They didn't really hear it. I kept driving it but it still seemed noisy. I took it to an independent mechanic and they checked it. They think everything is solid and don't see a bearing issue. They said it's safe to drive. They feel the noise is coming from the tires which are Michelin Pilot Sport A/S 3+. Same tires I had before. I know some of you have had those tires, do they seem excessively noisy to you?

 

I'm not sure I'm convinced it's the tires but I guess time will tell. There has been no vibration or instability at all when driving.

 

Thanks

 

Hi con_fusion. I have the Pilot Sport AS 3+ on my older MKZ now. And had the Pilot Sport AS 3 on before those. Same tread pattern on both sets. No noises at all with either set.

 

Besides, you said they were quiet before, and a brake job would not lead to new tire noises. It is highly unlikely to be the tires, unless one threw a belt or something.

 

Keep us updated and good luck.

Edited by bbf2530
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On 10/30/2020 at 6:18 AM, eGuru said:

May not be a wheel bearing issue but more likely a CV joint since you say it is worse when turning. Make some tight low speed turns with the windows open and listen carefully.

 

I haven't noticed any typical clicking or anything with a low speed turn. It's more noisy on a gentle curve to the right at 50mph. I'm not sure that could indicate a CV issue or not. They keep telling me it's fine but when you've been driving the car for 10 years and it sounds noisy you know something is off. 

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On 10/31/2020 at 11:08 PM, con_fusion said:

 

I haven't noticed any typical clicking or anything with a low speed turn. It's more noisy on a gentle curve to the right at 50mph. I'm not sure that could indicate a CV issue or not. They keep telling me it's fine but when you've been driving the car for 10 years and it sounds noisy you know something is off. 

If there is a particular speed range band where the vibration is strongest, I would suspect a CV joint.

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8 hours ago, eGuru said:

If there is a particular speed range band where the vibration is strongest, I would suspect a CV joint.

 

Thank you. There really hasn't been a a vibration. The steering has been stable. You can hear it at low speed but more noticeable > 50MPH. One particular freeway interchange goes up and banks to the right and it is definitely louder driving through that area.

 

Since I got the tires at Costco, I had them check to see if there was anything wrong with the tire or balancing. Everything looked good to them but the tires only have 2000 miles on them.

 

A bit puzzled. I'd hate to change the bearing and hub only to find it was the CV joint.

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