以下是www.ehow.com關於wheel bearing symptoms的介紹：
Grinding Noise
The most typical sound from bad wheel bearings is a metal-on-metal grinding or scraping noise. It may not be very loud. Other possible noises associated with bad wheel bearings are squealing, squeaking, chirping or even a moaning sound.
Motion
The frequency of the sound increases with speed, although it may become impossible to hear with other highway noise. The noise may go away when turning, or it may become worse. It might also only occur during turning.
Steering
Bad wheel bearings might cause a bit of steering wander.
Braking
Another possible symptom of bad wheel bearings is a pull to one side while braking.
Wiggle
When trying to diagnose a bad wheel bearing, jack up the front of the vehicle and try to wiggle the wheel from top to bottom. If it wiggles noticeably, that may indicate a bad wheel bearing.
Read more: What Are the Symptoms of Bad Wheel Bearings? | eHow.com http://www.ehow.com/facts_4856790_what-symptoms-bad-wheel-bearings.html#ixzz0qc6lPGIk
Grinding Noise
The most typical sound from bad wheel bearings is a metal-on-metal grinding or scraping noise. It may not be very loud. Other possible noises associated with bad wheel bearings are squealing, squeaking, chirping or even a moaning sound.
Motion
The frequency of the sound increases with speed, although it may become impossible to hear with other highway noise. The noise may go away when turning, or it may become worse. It might also only occur during turning.
Steering
Bad wheel bearings might cause a bit of steering wander.
Braking
Another possible symptom of bad wheel bearings is a pull to one side while braking.
Wiggle
When trying to diagnose a bad wheel bearing, jack up the front of the vehicle and try to wiggle the wheel from top to bottom. If it wiggles noticeably, that may indicate a bad wheel bearing.
Read more: What Are the Symptoms of Bad Wheel Bearings? | eHow.com http://www.ehow.com/facts_4856790_what-symptoms-bad-wheel-bearings.html#ixzz0qc6lPGIk
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