Brake Rotor Replacement

[JTP]

Originally Posted by sdharmani

OEMs cross drill to save weight ... cooling happens through the gap between the two sides of the rotor.

Weight savings is minimal. Brake pads out-gas under heavy braking and cross drilling allows those gases to escape so the pad maintains contact with the disc. Modern brake pads out gas much less than before so it's not as much an issue but the performance image of drilled rotors sells. The downside to drilled rotors are they eat up pads quicker and if subject to repeated heavy braking, cracks can emanate from the holes.

[knicksplayer]

Hi everyone,

I have my break/break wear signal on and it looks like the problem is coming from the brake rotors. Does anyone know how much this should cost me roughly (with labor) if I need to change all 4 on my 02 boxster?

Thanks for your help!

[Lobo1186]

If your brake wear indicator is on, then it is not for your rotors but your pads. You can take a flashlight and check all the pad thicknesses easily without taking the wheels off.

However, the case could be that you need new rotors too. The brake wear sensors however, are on the pads.

[knicksplayer]

Originally Posted by Lobo1186

If your brake wear indicator is on, then it is not for your rotors but your pads. You can take a flashlight and check all the pad thicknesses easily without taking the wheels off.

However, the case could be that you need new rotors too. The brake wear sensors however, are on the pads.

I have two different indicators on...brake wear indicator and brake indicator. The pads were all changed but I'm thinking maybe the front sensors weren't changed and might cause the break wear signal to turn on? No need for a computer reset after you change your pads for the signal to go away right?

An employee from auto parts told my my rotors needed changing.

[Lobo1186]

they may have not put in new sensors or not correctly. Either way, the light will turn off once it is fixed. So the brake place you went to, replaced the pads and not rotors?

that is strange.

but yes they will go away once the sensors are replaced.

[Oaktown 986]

I'm currently putting Zimmerman rotors in back. Anyone know the size of those hex/torx bolts holding the calipers in place?

Thanks

[thstone]

Originally Posted by Oaktown 986

I'm currently putting Zimmerman rotors in back. Anyone know the size of those hex/torx bolts holding the calipers in place?

Should be a 10mm hex head bolt. Torque to 63 ft-lbs on re-installation. Some people say that the caliper bolts are one-time use only and should be replaced each time they are removed.