MINIMUM THICKNESS OF BRAKE DISCS????

[Die_Miek]

GUYZ

car: 2003 318i FL

what is the minimum thickness for front and rear brake discs??

i know it's stamped on the disc, so anybody who removed discs recently can you please check.

or anybody with a Bentley manual (haynes manual doesn't stipulate these minimum values) can you please check.

cheers cheers

 

[Sankekur]

Bentley manual only gives the minimum value for M3 brake discs as far as I know, and refers you to look on the disc hubs or something for the other models.
This is also something I would like to know, in my case just for my 330i

 

[Die_Miek]

did some searching on the net and found:

318-328:
front thickness new: 22mm
minimum : 20.4mm
rear thickness new: 19mm
minimum : 17.4mm

330:
front thickness new: 25mm
minimum : 23.4mm
rear thickness new: 22mm
minimum : 20mm

can anybody confirm that these are correct??

 

[moranor@axis]

i was looking the other day and remember it being about 2mm less than new so looks right to me...

 

[Die_Miek]

with those tolerances, than it makes sense why BMW recommend you change pads and discs together.

 

[applehero]

did some searching on the net and found:

318-328:
front thickness new: 22mm
minimum : 20.4mm
rear thickness new: 19mm
minimum : 17.4mm

330:
front thickness new: 25mm
minimum : 23.4mm
rear thickness new: 22mm
minimum : 20mm

can anybody confirm that these are correct??

The minimum thicknesses are spot on... (for the 318 anyway) :thumb: