When to change disc brake pads?
- Thread starter hevysrf
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Look at the thickness. You'll know if they need to be replaced -- they'll look very thin.
I'd do it if you have less than a quarter inch at that mileage.
Going down too far may wreck your caliper piston.
Also, when they are changed the sliders are cleaned and lubed up again.
If you wait longer, the sliders may seize, your caliper piston may seize, the piston dust boot may tear.
This makes it more expensive to service by just trying to milk them.
Going down too far may wreck your caliper piston.
Also, when they are changed the sliders are cleaned and lubed up again.
If you wait longer, the sliders may seize, your caliper piston may seize, the piston dust boot may tear.
This makes it more expensive to service by just trying to milk them.
Agree. At 80k I'd think they need replacement soon, especially on a heavy vehicle like that.
Originally Posted By: Falken
I'd do it if you have less than a quarter inch at that mileage.
Going down too far may wreck your caliper piston.
Also, when they are changed the sliders are cleaned and lubed up again.
If you wait longer, the sliders may seize, your caliper piston may seize, the piston dust boot may tear.
This makes it more expensive to service by just trying to milk them.
Yup, all this. Just need loving. If you see road salt you dont want rust jacking which can delaminate your pads even if they have lots of meat.
I'd do it if you have less than a quarter inch at that mileage.
Going down too far may wreck your caliper piston.
Also, when they are changed the sliders are cleaned and lubed up again.
If you wait longer, the sliders may seize, your caliper piston may seize, the piston dust boot may tear.
This makes it more expensive to service by just trying to milk them.
Yup, all this. Just need loving. If you see road salt you dont want rust jacking which can delaminate your pads even if they have lots of meat.
Originally Posted By: dparm
Agree. At 80k I'd think they need replacement soon, especially on a heavy vehicle like that.
+1 Most aftermarket discs now a days need to be replaced and cannot be shaved. If at 80k you just did a brake job I would spend the extra scratch and grab the OEM. Obviously worked well...
Agree. At 80k I'd think they need replacement soon, especially on a heavy vehicle like that.
+1 Most aftermarket discs now a days need to be replaced and cannot be shaved. If at 80k you just did a brake job I would spend the extra scratch and grab the OEM. Obviously worked well...
Too many unknowns. 80k to get to current thickness. What was the original thickness and what is the replacement thickness? How far do you drive in a year, etc.
1/4" is actually quite a bit of pad remaining. Most pads start with about 1/2" and you need to replace with say 2-3mm or about 1/8" remaining. You may have used only 2/3rds of the usable pad and have a good 20k of useful life in those pads. It is hard to say from behind a screen on the interweb.
1/4" is actually quite a bit of pad remaining. Most pads start with about 1/2" and you need to replace with say 2-3mm or about 1/8" remaining. You may have used only 2/3rds of the usable pad and have a good 20k of useful life in those pads. It is hard to say from behind a screen on the interweb.
Are we talking front or rear rotors?
Rear brakes usually last much longer than the front, since the fronts do most of the work, up to 90% of the braking. It isn't uncommon for them to lat over 100k.
You can see how much friction material is on the pads. If the pads look thin, replace them, along with the rotors.
As for what rotors to get, I suggest Centric Premium.
Rear brakes usually last much longer than the front, since the fronts do most of the work, up to 90% of the braking. It isn't uncommon for them to lat over 100k.
You can see how much friction material is on the pads. If the pads look thin, replace them, along with the rotors.
As for what rotors to get, I suggest Centric Premium.
The Mazda CX7 has brake pad sensors that will squeal loudly when the pads need replacing. The factories usual recommendation is to change pads when down to ~ 1/8 inch although, I prefer to change before that. Ed
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