is this still wheel bearing?

**spyghost** · January 25th, 2009 09:34 AM

hi,

i am getting a humming sound when running at "exactly 40kph only." nothing more nothing less. it is also NOT dependent on engine rev and gear.

if its not wheel bearing, what could be it?

**ghosthunter** · January 25th, 2009 09:54 AM

tire noise? Resonance issue?

**v6dreamer** · January 25th, 2009 10:32 AM

Originally Posted by ghosthunter

tire noise? Resonance issue?

It you suspect its the tire, check for cupping also known as "Feather Wheel". If it is, two main causes: toe adjustment and weak shocks. Once the tire becomes cupped it wears like that and stays noisy. You can correct the root cause, but not the cupped on the tire.

**spyghost** · January 25th, 2009 05:30 PM

shocks - newly replaced a year ago. been using it daily driven, home/office only no tracking.

cupped tires as in vulcanized?

**tip_tipid** · January 25th, 2009 06:13 PM

wheel bearing noise will be audible from any speed, and it will change pitch from low to high. it will be more of a grinding noise.
cupped or feathered tires is caused by wheel alignment problems in general.
Tire service centers with wheel alignment systems can help you on this.
Depending on your vehicle type, when shocks are replaced, it may need to be wheel aligned at the same time.

**speedyfix** · February 15th, 2009 12:34 PM

probably a resonance issue. nothing major imo.

**endlessgwing** · April 7th, 2009 11:35 PM

i have a similar problem po, pero yung sound is parang metal to metal, parang sandpaper na dumadaan sa metal. and yung sound is not continuous, isang portion lang kung baga.sa isang revolution meron part lang na nagssound, yung sa rest wala naman. hindi sya nawawala pag nagbbrake, and nagpalit na din po ako ng brakepads and reface ng rotors, pero ganun pa din, ano kaya yun? wheel bearing po kaya? meron din isang "tok" sound when turning and uneven yung road. kung turning and even yung road, wala naman. tia!