I hear a roaring noise in the rear of my car what can the noise be?

Hi Chris, I'm glad to help! Vibrating / Roaring sounds can be anything from rear or front diff problems. Drive Line U-Joint problem. Wheel bearing bad. Even transmission problem. You have to pin-point where the vibration is, is it in the front, in the rear, on the right or on the left. Is it in the center of the vehicle and so on. Hope this helps and have an awesome day Chris!

sounds like the fan noise,but check power steering fluid

a wheel bearing can make a roaring sound from the rear wheels feel the tires for a rough tread if they feel smooth then jack it up and spin the rear wheels you might hear the noise while spinning by hand

sounds like one of the rear wheel bearing/hub assemblies is worn out.sit in back seat while someone else drives to determine which side or lift rear wheels, spin by hand and listen with stethoscope on backside of hub.....you should hear virtually nothing from a good one.

possibly a rear axle bearing. they do make a roaring and whining sound when driving.

THIS NOISE IS CAUSED BY A POSSIBLE WHEEL BEARING
WHEN YOU DRIVE THE VEHICLE YOU SHOULD HEAR A ROARING NOISE AND AS YOU GO FASTER THE NOISE WILL GET LOUDER AND WHEN YOU TURN THE WHEEL FROM SIDE TO SIDE THE NOISE WILL FADE IN AND OUT. THIS IS AN INDICATION THAT THE WHEEL BEARING IS BAD.
ALSO ANOTHER WAY WOULD BE TO JACK UP THE FRONT OF THE VEHICLE, BLOCK OFF THE REAR WHEELS SO THE CAR DOES NOT ROLL BACK ON YOU, THEN PUT THE CAR IN NEUTRAL AND GO TO THE WHEEL PUT YOUR HAND ON THE STRUT BASE AND SPIN THE TIRE WITH YOUR OTHER HAND YOU SHOULD FEEL A GRINDING NOISE. IF SO THE WHEEL BEARING ON THAT PARTICULAR SIDE IS BAD AND IT NEEDS TO BE CHANGED

Then noise you hear after shutting off the car very well might be the air suspension compressor. The air ride system is still activated for a half hour after the vehicle has been shut off. The roaring noise from the rear could be a bad bearing. The rear axle seals don't always leak when a bearing goes out. So it's not a conclusive indication that they are good just because the seals aren't leaking. If your mechanic isn't too versed in differentials it may be advisable to seek an opinion of a reputable transmission shop (however, that may be a difficult task).

That roaring noise should be a wheel bearing. Jack up the rear wheels and spin the tires by hand. You can hear a grinding noise if the noise inside the car is as load as you state.. The only other noise that will be like that is the differental gears inside the drive axle

first i would check the tires , are they cupped or chopped on the tread? run your hand over the tread and see if it feels rough and uneven. take the truck to a auto repair shop and have them jack both front and rear axles off the ground, put the truck in 2 wheel drive and run the speedometer to the speed you usually hear the roaring noise, if you don't hear the noise , put the truck in 4 wheel drive, turn off the traction assist if it has one and run it to the speed you would hear the noise. if you hear the roaring noise with tires off the ground, the problem is in the drivetrain, (engine, transmission, transfer case, u-joints, differentials or the front left or right cv halfshafts or u-joints). the older models (97 98) had the front two driveshafts from the differential turning all the time, they engaged in 4 wheel drive from the transfer case and a solenoid on the front differential. depending on the miles you have on this truck, the most likely areas i would look at would be the tires, u-joints/cv joints, and front and rear wheel bearings. thanks and good luck.

either a bad tyre or a diff problem