Why my break pad wear fast
Why my break pad wear fast
869799
2个答案
最有帮助的答案
声誉积分: 1.7千
3
Hi,
Under normal operation brake pads are pushed against the disc rotor when you press the brake pedal, the calliper responds to the pressure of the fluid and applies the pad to the disc.
When you release the pedal the pressure comes off and the calliper retracts.
If the calliper bushes are sticking or there is a buildup of dirt/grime/rust, then they don’t retract properly leaving the pad just sitting on the disc and slowly wearing whilst you’re driving.
Usually when you change brake pads it is customary to check clear operation of the calliper before fitting new pads.
If they don’t travel freely, then you would either clean them or fit a new calliper kit before fitting new pads.
Secondly, there are also varying degrees of quality in brake pads so some will wear faster but provide better braking response, some will last longer but won’t be as effective.
A good indicator of brake wear is the amount of brake dust sitting on the wheel rim, if you wash your wheels and they develop a good deal of dust on them quickly it’s a fair indication that either the callipers are not retracting fully or the pads are the quick wear type.
If you are doing brake pad changes you should also inspect the disc rotors for signs of scoring as this will affect braking and disc pad life.
If the disc rotors have signs of scoring or damage they should either be re-surfaced or replaced if below the minimum thickness level.
Hope this helps
这个答案有帮助吗？
得分
1
声誉积分: 7.3千
5
5
1
Do both pads wear evenly? If so, do you drive with 2 feet? If so, stop doing that. It doesn't take much movement of the brake pedal to cause the pads to contact the rotor and wear them down.
If one pad wears more than the other, then it is likely a hanging caliper.
Either of the above may cause overheated rotors that will give you another symptom. After driving a while, especially at hwy speed, when you apply the brakes, does the steering wheel shake?
If none of the above, how many miles between replacement and what is your city vs hwy driving ratio?
Typically, you should get at least 50,000 miles on a set of pads depending on the size and type of vehicle. A hybrid might go 150,000 or more.
Another question, why are you replacing pads, and who is doing it? It is very common for service shops to tell you you need new brakes when you do not. It is their cash cow and is easy to sell to uninformed customers.
这个答案有帮助吗？
得分
0
