Have 97 crv ,225000. kms on it . it has a grinding noise like a brake pad worn out and a higher pitch noise that sounds like a electric motor whirling. Both sound at the same time from the back end when moving forward . it is loud enough to hear by people outside on sidewalk. checked the brake pad they are ok. no sign of scraping in brake area either. Any help as to were to go next would help. It got to this noticable point after we had a snow and rain storm for 2 days and I was out in it a lot driving.

• Knowing the warning signs of impending trouble can go a long way toward keeping your car from a highway breakdown.
  
  You need to develop an awareness of how your car should sound. For instance, when you turn the key to start, the gear like sound of the starter motor engaging should be smooth and sound like an electric motor working hard to crank the engine. If you notice a different sound - more like a grinding - chances are you have a starter motor problem about to happen. Let's say you're driving along and you feel the steering wheel vibrating at certain speeds. The onset of this subtle vibration could tip you off to a tire that needs to be balanced, worn steering linkage or a bulge in a tire that may be about to blow out. In any case, the vibration needs attention. Normally you shouldn't notice the sound of the exhaust system. A sudden change in your car's sound, therefore, isn't something to ignore.
  
  Suppose you're used to a pleasant hum, then, perhaps after a bump or when starting up the car one morning, there's a loud roaring that sound like a hot rod without a muffler. The harder you press the gas pedal. The louder the noise becomes. A noisy exhaust means the exhaust gases are blowing out under the car rather than at the rear of the car - a dangerous condition. Brakes play their own warning tune. On many cars, a scratching noise coming from the wheels that stops when you stop pressing on the brake pedal is caused by a low-brake warning device. Its purpose is to warn you that you need front brake pads. A loud grinding noise when you step on the brake pedal is an alarm that your brakes need immediate attention. The grinding noise occurs when the brake pads are totally worn away and the metal of the brake pad backing plate rubs directly on the brake rotor.
  
  Ignoring grinding brakes can be a costly - or even deadly - error. Shock absorbers help keep the car steady and balanced while the wheels roll over bumps and ruts. Their modern counterpart, the MacPherson strut, does essentially the same thing. You might not notice worn shocks or struts when you're simply riding around town. The safety effect of these devices comes into play at higher speeds. When you hit a bump, the tire wants to bounce like a basketball. Worn shocks or struts allow the ties to bounce out of control making steering difficult and braking less effective.
  
  What you may notice is the car rocking more every time you stop, assuming an almost boat like quality. Old, broken or worn out shocks and struts should be replaced to ensure safe steering and braking at higher speeds. Engine noises are easiest to hear when the car is not moving. Transmission sounds or brake noises usually occur when the car is moving. Pay attention to any new sound and keep notes - how it sounds, when it makes the sound and what difference, if any, occurs in driving when the noise is present - to help you describe it to your service dealer.

get is service now before the grind wrecks more parts.
id not drive it, at all , may be to shop.

Try replacing or resurfacing your rotors and brake hardware. Using brake pads similar to the oem will also help stop any problems.

What noise? And year and make of car?
A clicking noise on turns is a worn CV joint on the axle shafts. A grinding noise at one of the wheels could be a wheel bearing. Worn brake pads may cause squealing, screeching other high pitched noise.

sound like brake pads worn down to metal damaging the brake rotor causing grinding noise.

the grinding sound and the high pitch sound may not be related.
the grinding in the brakes means it is time to replace the brake pads / shoes and either replace or repair the discs and drums.

the high pitch noise that you are hearing while turning is more likely caused by a worn belt, low power steering fluid, or a faulty power steering pump.

Although it could be indicating something more serious like hub bearings going out, your best bet is to take it to a front end shop that offers free estimates and have them diagnose it in person.

hope this helps.

Brake pads are worn. That noise is the sound of the backing plate for the brake pads hitting the rotors. You will need to replace the pads and probablt the rotors. When the brakes go metal to metal like that it typically destroys the rotor.

Brake pads are worn out. The ABS light would not come on because there is nothing wrong with the ABS. The grinding you are hearing are the brake pad backing plates rubbing against the rotor. You should have heard a high pitched squeal long before this happened. More than likely the rotors are now destroyed and will need replacing or at the very least turned in a machine shop. Fix this yesterday.

Your rear brake pads are most likely worn to the wear indicator which can make a high pitch squealing noise. It is very common that it will squeal when backing up, but not when applying the brakes. 50,000 miles is about the average life for rear brake pads on your car.