Hey guys,

This is my first post really, but I've been lurking since I bought the car in Spring of 2013. So, firstly, hi

A little info about the situation:
- 2006 Brilliant Silver G35 Coupe, 71K miles
- When I bought it last year (at 54K miles) the dealer said the brakes were new
- from what I can tell, OEM pads and rotors.
- In NE Ohio, and recently our roads have been requiring frequent and copious salting

For about a week or two now my front passenger brake has been squealing when moving. It only happens after I've been driving for a while, once the brakes are warm. Then, I'll cruise down the road at about 40 mph and a few moments later, my brake starts to SING. It's a constant, high pitched, metal-on-metal sound. When I apply the brakes, the squealing continues, but only for a split second then goes away.

Thinking that I was just worn down to the wear indicators, I picked up some new brake pads. I took the wheels off, saw that the rotors on both sides looked a little glossy (due perhaps to glazing?) so, I sanded up the face and rim of the rotors pretty good. I also noticed that there is a very slight groove in both front rotors.

After I took the caliper off, I saw that my brake pads looked nearly brand new. There was barely any difference between the new and old pads. One thing I did notice though is that the inner pad looked worn differently than the outer pad. There was also quite a bit of dust and buildup. I would've cleaned everything better but the 22mm bolts on the inside of the brake pad mounts were seized up or torqued on there extremely tight, so I couldn't get them off (any tips?). There was also a bunch of crud in the pistons of the caliper, so I blasted them as well as i could with compressed air.

Needless to say, I put the brakes back together and they're still squealing.


Any suggestions?

 

hmmm, are you sure they're OE? sounds kinda like performance or pad that have metal in them? I go with ceramic pads b/c i get paranoid about brake squeal myself hahaha. If you're new pads don't have metal and it was still making the noise, I don't know what to tell you other than to really inspect the calipers and rotors some more... lol. Good luck with your diagnosis Greg

 

So, after focusing on the front brakes for a week, I decided to check out the rears... Turns out the rear right caliper was completely stuck. Replaced both rear calipers, pads, and rotors and the problem has obviously been resolved.