Should I replace caliper holder bolts

[kdad]

I changed the rear brake pads and rotors. I reused the caliper holder bolts.
The rear brakes are making occasional squeaky sound

Could the bolts be the cause? Thanks

[RED_Y_]

What pads and rotors did you use? OEM BMW?

[Tomcat_F15_STL]

Guide Pins are cheap. $7.50/ea.

You might replace those pins just to either solve or eliminate those parts as a problem.

Also, I coat the pad backsides with a smear of caliper grease or Brake Quiet spray to minimize squealing..

[kdad]

Yea I got the OE brake pads so they seem pretty good. I also used the same crc brake paste

Should I try to replace the caliper holder torx bolts and pin bolts as suggested?

https://www.fcpeuro.com/products/bmw-brake-pad-set-ate-34216776937-ate-ld7232

[Clifton]

You shouldn’t need to replace the guide bolts. Use Scotchbrite or steel wool to clean them up then use Ate plasti-lube to grease them up. Once reinstalled, the caliper should freely “float” and slide in/out horizontally to the ground.

If they are binding, the pads will show uneven wear between the inner/outer. You may even see angled pad wear.

Brake noise could be caused by the backing plate of the pad making contact with the caliper or the tabs/ears of the pads needing some anti-seize where they rest on the caliper carrier.

[tlow98]

Originally Posted by kdad

Yea I got the OE brake pads so they seem pretty good. I also used the same crc brake paste

Should I try to replace the caliper holder torx bolts and pin bolts as suggested?

https://www.fcpeuro.com/products/bmw-brake-pad-set-ate-34216776937-ate-ld7232

I did not, but I was sure to use the actual torque specs. I’m not sure why they say to replace them. The second time I take them apart I’ll likely replace them to be safe.