Rear End Roaring
Thread Starter
Instructor
Joined: Aug 2005
Posts: 162
Likes: 0
From: Hickory Creek Tx.
Rear End Roaring
I just had a question that perhaps some of the seniors could answer. I have a 2000 C5 Hardtop coupe 6spd, I just put new rims and tires, Kuhmos, instead or runflats, but while driving on the road It still seems like the rear end is roaring awfully loud. Is this normal? What should I check? Other than fliud in the rearend. Thanks
"AlohaC5" Senior Member
Joined: Jun 2003
Posts: 3,562
Likes: 44
From: Madison, AL
Can you describe the sound as grinding or howling - from the differential or from the tires? Do you hear it on smooth and rough roads? If the noise just started after installing your new non-run flat tires, it might be coming from the Kuhmos. Check tire pressure and if their directional - ensure they were mounted properly. Otherwise, I recommend checking and using synthetic fluid in the differential.
Melting Slicks
Joined: Apr 1999
Posts: 2,611
Likes: 0
From: Lake Martin ALABAMA
My 99 H/Top now has 140 thou miles since I bought it new.
This is my 4th set of tires, (a different brand each time) and I can
say that the car is VERY sensitive to tread design as far as noise goes,
but you will ALWAYS hear the rumble through that bass drum
area under the trunk.
Don't be blaming the differential......the noise is from the tires.
This is my 4th set of tires, (a different brand each time) and I can
say that the car is VERY sensitive to tread design as far as noise goes,
but you will ALWAYS hear the rumble through that bass drum
area under the trunk.
Don't be blaming the differential......the noise is from the tires.
Le Mans Master
Joined: Mar 2002
Posts: 6,885
Likes: 2
From: Corpus Christi TX
get the car at speed on the freeway, like 60mph. Throw the car in neutral and listen carefully, then throw the car in fourth and hit the gas. If it's noticably louder (obviously i'm not referring to exhaust) under throttle but fairly quiet in neutral, it's probably the rear end. A blown rear will whine under load.
Burning Brakes
Joined: Mar 2003
Posts: 874
Likes: 0
From: Bonita CA
Now that you went away from the louder tire noise run-flats, you now may be hearing other things like a bad wheel hub bearing. Jack up the rear end so the tires are off the ground. Then try to wiggle the wheels with your hands to see if there is excessive slop or play. This typically shows that you have a bad bearing.
Burning Brakes
Joined: Jun 2005
Posts: 1,171
Likes: 0
From: TN
Cruise-In VII Veteran
Originally Posted by DJMRTS
Now that you went away from the louder tire noise run-flats, you now may be hearing other things like a bad wheel hub bearing. Jack up the rear end so the tires are off the ground. Then try to wiggle the wheels with your hands to see if there is excessive slop or play. This typically shows that you have a bad bearing.
Sounds like a wheel bearing, however, a bad bearing may not have any play and still roar. The sure fire method (and in-the business trick) is to spin the wheels(may need to turn on car and press the accelerator with rear wheels in air) while placing your hand on the hub or spindle. Any roughness or vibrations will pinpoint which bearing may be bad, good luck
8th Gear
Joined: Feb 2006
Posts: 8
Likes: 0
From: Kansas City Missouri
Originally Posted by The Nuts
Sounds like a wheel bearing, however, a bad bearing may not have any play and still roar. The sure fire method (and in-the business trick) is to spin the wheels(may need to turn on car and press the accelerator with rear wheels in air) while placing your hand on the hub or spindle. Any roughness or vibrations will pinpoint which bearing may be bad, good luck
New member, new 1988 corvette owner. Bought the car simply because I wanted it. Canary yellow, 200K miles. Needs work, but I wanted that too. Crazy, probably. Love the forum, already learning.
First project is to replace the drivers side rear wheel bearing. My question is, should I replace both at the same time? Also, what should I look to replace at the same time as the wheel bearing. What other problems usually arise when the wheel bearing goes out? I bought mine from wheelbearingsinc.com tonight, so it will be a project for next week. Also, when I start the car, it is not idling worth a hoot, wants to die unless if give a little gas. Any ideas right off?
I will be a frequent visitor of this forum, I believe, as this car needs a lot of TLC. But, heck the tires are in good shape!
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