How often or how many kilo meters to replace the brake pads?
The life of brake pads is difficult to define in terms of a definite number of kilometers or time.
The following conditions need to change the brake pads.
1. Look at the thickness:
Usually the thickness of a brand new pair of brake pads is around 1.5 cm.
When the thickness of the brake pads is less than 0.5 cm as observed by the naked eye, it is time to prepare for replacement.
Each brake pad also has a raised mark on both sides, the thickness of this mark is around two or three millimeters, which is also the limit of the thinnest brake disc replacement, if the brake pad thickness has been parallel to this mark, it must be replaced.
2. Listen to the sound:
If there is a sizzling sound of “iron rubbing iron” while tapping the brakes, the brake pads must be replaced immediately.
This is because the brake pad limit markings on both sides of the brake pad have rubbed directly against the brake disc, proving that the brake pad has exceeded its limit.
3, sense strength:
when stepping on the brakes, if you feel very hard, there is always a soft feeling, often need to step on the brakes deeper to achieve the previous braking effect, when taking the emergency brake will obviously feel the pedal position low, then it is possible that the brake pads have basically lost friction, this time must be replaced, otherwise it will cause serious accidents.
How brake pads should be inspected and replaced.
1, under normal driving conditions every 5,000 km brake shoes check, not only to check the remaining thickness, but also to check the state of shoe wear, the degree of wear on both sides is the same, whether the return is free, etc., found abnormal conditions must be dealt with immediately.
2, brake shoes generally consists of iron lining and friction material two parts, must not wait for the friction material part are worn out before replacing the shoes.
For example, the front brake shoes of the Jetta, the thickness of the new piece is 14 mm, and the limit of the replacement thickness is 7 mm, which includes more than 3 mm of iron lining thickness and nearly 4 mm of friction material thickness.
Some vehicles have a brake shoe alarm function, once the wear limit is reached, the instrument will alarm to prompt the replacement of shoes.
Reached the use limit of the shoes must be replaced, even if they can still be used for a period of time, will reduce the effect of braking, affecting the safety of driving.
3、Replace the brake pads provided by the original spare parts, only then can the brake pads and brake discs between the best braking effect, the least wear.
4、When replacing the shoes, you must use a special tool to jack back the brake distributor pump.
Can not use other pry bar hard pressure back, this will easily lead to brake caliper guide screw bending, so that the brake pads jammed.
5, after the replacement, be sure to step on a few feet of brakes to eliminate the gap between the shoes and the brake disc, otherwise it is easy to cause the first foot without brakes, a safety accident.
6, brake shoes after replacement, need to break in 200 km to achieve the best braking effect, just replaced the shoes must be careful driving.
The normal life length of brake pads is 20-30,000 km.
When the car has been driven for 20-30,000 km since you last changed the brake pads, then you may need to go to a repair shop to change the brake pads.
The brake pads will become thinner after a long time of use, and when braking, you will feel that you can’t make any force, and you will also make a sound like a snake spitting its letters.
Regular and timely check the wear and tear of vehicle parts is more important, but not the regular life of the expiration must be changed, because each owner’s driving style is different, the degree of loss of parts is also different.
Some owners may be more gentle driving, maintenance is also better, so the life of the vehicle parts will be extended, such as brake pads conventional life is 20-30,000 kilometers, but the maintenance of good can use 40-50,000 kilometers.
Some owners drive more roughly, all kinds of slamming on the brakes, in this case, the brake pads may use less than 20-30,000 km will be scrapped, need to be replaced in advance.