Question about 2006 Infiniti M45
Just a bad sound when i exceed a speed of over 30mph
A bad wheel bearing noise will normally increase or roar loader with car speed but depends on how bad it is. If you turn momentary to the left or right while driving down the road say above 30 mph, the noise will change pitch either gettin loader or quieter. Locating the correct bearing to change can be tricky because sometimes it may sound like the left bearing but it can be the right. The best thing to do is to jack the car up on jackstands and get the wheels spinning and while spinning prob the hub area on the back side of the wheel with a mechanics stethoscope to pick up the sound. Placing the plastic end of a long screw driver against the ear while probing the inner hub with the other end works equally well for locating bearing noise. Compare the noise heard while spinning and the noisy one is the bad bearing. Do not spin the wheels fast while on jack stands or it could cause damage to the halfshafts (cv joints). Spinning the back wheels with be hard to do since there is no poweer to them. If they are bad enough, they will still make noise while someone is spinning them by hand. Most shops have a device for spinning the wheels.
Posted on Aug 06, 2012
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