Siezed NSF Calliper

S

snowfish

Member
Driving along the other day and the steering wheel started shaking quite violently

Crept home and upon inspection found that the brakes were not fully releasing on the nsf. Found that the piston seal had come away and that the inside of the piston housing was rusting, also noted the piston was slightly pitted.

Managed to get it working again by cleaning, adding wd40 and compressing/ recompressing.

Should i now get the calliper replaced ?? Safety and common sense tell me yes.

Secondly, im guessing the pads and disks wont have fared to well with the extra heat. Am i right in thinking there are no alternatives to the stock disks on the m? I have run ebc ultimax and mintex pads on other cars and found the braking performance greatly improved

Thanks
 
I had exactly this on my 330i Touring recently. The advice was to replace the caliper as, even though it was possible to un-seize it, it was deemed only a matter of time until it happened again...

As fate would have it, I was on my way to my Indie with new Mintex discs and pads in the boot for them to slip on whilst they had the car in for a service anyway.

Incidentally, first post, been lurking for a while here absorbing knowledge as my mid-term plan when I get my employment situation sorted out :( is to rationalise from my 330 and Cerbera to one Z4MC - hi everyone!

On the Cerb I've had EBC Red Stuff, Mintex C-Tech 1144 and Ferodo DS2500 pads. EBC's needed to be fairly warm to work so not great on the road in winter, Mintex: great bite but messy, DS2500: less messy but I preferred the Mintex. No one seems to have a bad thing to say about Pagids in BMW OEM calipers though.
 
There are brake caliper repair kits available at a fraction of the price of renewal if you are so inclined.
 
I had the same on mine, caused one of the discs to warp. All replaced inder warranty :driving:
 
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