I was checking my rotors over the weekend and noticed (only by touch) that the caliper-side of both my front rotors are somewhat curved. I've affixed an illustration below to better explain it.



Towards the edge is where you feel the "slope" the most, in fact it's not as linear a curve as i have it in the illustration... think of it as a mini-notch.

I checked the pads about a month ago and there were no issues with it, although i failed to check the rotors at that time.

Thanks!

 

My best guess would be the slide pins not being lubricated enough. The inside always wears faster than the outside too...have you been doing some spirited driving with high speed braking?

 

if you have stock calipers, I'm going to have to agree with the slide pins being seized...

 

Thanks for the responses! !PrjctMax! i thought spirited driving was the point in owning a max?

Yep, they're still stock. I'm not an expert at this stuff, would either one of you be kind enough to let me know how do i go about fixing the seized pins?

 

lubing them! take off the pads and the place that they "stick into" is the place that you want to lube. Just ask a local auto parts store for lube like that and they'll be sure to have it.

make sure to clean the area first...a wired brush and brake clean would be good

And yes, spirited driving is a must, but crappy brakes will wear fast while trying to slow a big beast like the max!

 

Sounds simple enough. I followed this set of instructions last time i changed my pads. I must've put on too much grease on those pins for it to be seized.

Does it matter what type of grease i use though? I just used the synthetic brake grease from Autozone (it came in a blue can with a brush attached to the metal cap, the grease itself is dark gray).

Thanks for the help!

 

1. unbolt caliper from caliper mount bracket
2. pull caliper off (do NOT detach brake line)
3. pull out the slide pins (they have the little rubber seals on them
4. wipe off any gunk/grease
5. if pins are heavily worn or have notching, replace them
6. if they're ok, put new grease (caliper pin lube) on them and re-install
7. work them in and out to make sure they slide smoothly
8 reassemble everytihng...

good to go.

 

that's why you get rid of the crappy brakes

 

^^ showoff...

 

300zx ftw! My RTP rotors, Hawk HPS pads, and SS lines are great for the driving that I do, although I would like to get 4POT calipers, it's just not on my "to-do list" yet.