2013年10月9日星期三

Choosing the Right Brake Pad

If someone ask you what’s the most important safety part on your car, don't think too long about it! The answer is the brake pad. Without effective braking ability, a car cannot be driven safely, and you may need brake repair. Among the many maintenance needs of your car is brake pad replacement. There are no brake pads that last forever, even though some newer types can last quite a while. Even the most advanced materials today are under the influence of wear and tear. When it becomes clear that your car brakes need repair, your quick response can help you save time and money. The longer you continue to use worn brake pads, the more likely they are to cause damage to the brake rotors.

The first sign that your brake pads are worn and you need brake repair is a high-pitched squeal when you stop the car. This disturbing noise comes from the soft-metal wear indicator when it rubs against the rotor. The purpose of the wear indicator is to alert you that the pads are worn. You may also notice that your car pulls to one side, your brakes grab or vibrate, or your brake pedal feels softer when you press on it. These are all signals that it’s time for new brake pads.

If you take your car for brake repair, you probably only need to replace the pads. Brake pads are plates that have a friction material bound to the surface on the side that faces the brake disc. Deciding which kind of brake pad to buy requires your consideration of the advantages and disadvantages of each. There are four types of brake pads to choose from, and they are semi-metallic, non-asbestos organic, low-metallic NAO, and ceramic. While semi-metallic pads are very solid and have great heat transfer, they also can wear down rotors quickly. They can be noisy, and may not perform that well in cool temperatures. Non-asbestos organic pads are softer and quieter, but they produce more brake dust and wear out faster. Low-metallic NAO brake pads contain small amounts of copper or steel, which creates better transfer of heat and better braking performance. The metal also produces more brake dust and more noise.

Lots of people believe that ceramic pads are the best. They consist of ceramic fibers, nonferrous filler materials, and bonding agents. They also contain small amounts of metal. Ceramic brake pads are more expensive than other types, but they are cleaner and quieter. They provide better braking performance and do not wear down the brake rotors. Though there are only four types of pads, there is a wide variety of brand names and performance categories to make your decision more difficult.

Most manufacturers produce standard, upgraded brake pads. For regular driving conditions, standard pads should be enough. The upgraded pads are ideal if you carry heavy loads or many people often, or drive regularly through mountainous region. If you use upgraded pads for normal driving they will probably just be noisier and create more brake dust. Whichever type you choose, be sure to buy pads with a certified label that the pads have been tested to ensure they are as effective as the original equipment on your car.

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