Rumbling feeling/noise from under car at high speeds... Why?

Question

I own a 2001 Toyota Solara. A few weeks ago I began to feel/hear a prominent rumbling from under my car. As time has passed, it became worse and worse. It isn't apparent at low speeds, but when I get on the free way and hit about 40mph it begins. It is the worst between 50-60 mph. There is nothing loose anywhere under the hood or under the car. I changed everything relating to the brakes. I had every single fluid changed. The cv joints are good and the wheels aren't bent at all. I am at a true loss, please help!!!! thank you ;)

Answer 1

If it's a roaring metal sound have your wheel-hub (wheel bearings) checked.

When they go bad it's often hard to tell which side is bad.  

Answer 2

if it sounds like it's "under" the car, might be universal joints in the driveshaft ( if it's rear wheel drive ), if not rear drive, then I don't know what it could be. Does the sound make a whump-whump sound, or just a rumbling noise. Usually joints only make a sound with a high-low pitch, but not always. A rumbling noise could be rear axle bearings, they kinda "roar" and rumble constantly when they go bad. I assume this is a high-mileage car?

One way to check the universal joints is to be at a standstill, and shift from Drive to Reverse. If you hear a "clang" or clunk sound, then you know it's a joint going bad. You should hear no noise when shifting between Forward and Reverse normally, any metallic noise means there's looseness somewhere under there in a driveline component.

Good luck!

- The AMC Gremlin Guy -  

Answer 3

could be 2 things

1-alighment((if the car shakes on high speeds)

2-front axles

and also make sure that ur tires are all in good shape and have that same pressure and never buy a used tire

Answer 4

wheel bearing, flat spot in a tire, maybe the drive shaft isn't balanced