Help With Suspension/Tire Noise

[NoahsArk117]

I've noticed a "humming" sound and vibration coming from the front drivers side wheel when driving, very similar to tire noise. It doesn't change when I turn left or right and the sound increases volume up through 40mph then stays constant after that. I've also noticed that the sound is considerably louder and produces more vibration on vertically grooved concrete roads than it does on tarmac or asphalt roads. I went ahead and changed out the wheel bearing/hub on that corner but so far thats had no effect. Steering and handling performance hasn't changed from before the noise appeared. Have any of you experienced something like this and if so what did it end up being? Been scratching my head on this for a while now.

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[Cobra Jet]

A tire with either bad/worn/low tread can cause such noises/vibes and can be more pronounced on different road surfaces. Also a tire with a bad inner steel belt couid cause noises too.

I know you said you had replaced the hub bearings, but how long ago and was it torqued down to proper specs? Just because a wheel hub assembly was replaced doesn't mean it can't prematurely fail (again). There's been many threads about this where M6G members have had failures with as little as 5k miles or those in the upper higher mileage buckets. Some have even had the same wheel hub bearing replaced 2-3x under warranty.

Wheel hub bearing will increase with vehicle speed, it can also sound worse when going into a curve and the car is leaning on the affected side.

Other than a wheel hub bearing the only other areas that would cause such a noise:

Dragging brakes - easy to tell by taking temp of rotor or rim; excessive heat or burning smell after parking is a sign.

Many have had driveline vibes which couid be driveshaft center support bearing, trans flange or rear pinion flange.

Rear Diff failing - pinion bearing usually is the main point of failure. Again this failure will present NVH and get worse/louder with speed.

Loose rear axle nuts - there's a big thread about this in the suspension sub-forum on here.

I know you're saying the noise comes from the front, but sometimes noises may seem like they're coming from A, when they couid be coming from B.

 

[br_an]

Rotate your front wheels and see if the noise follows to the passenger side. If it does, it's your tire and you can decide if you want to buy a new set or live with the noise.

 

[shogun32]

if it's the wheel/tire, take it to a Hunter RoadForce-equipped facility and they can tell you if the tire is defective by running it on their machine.

 

[KingKona]

Rotate your front wheels and see if the noise follows to the passenger side. If it does, it's your tire and you can decide if you want to buy a new set or live with the noise.

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