M3 CSL brakes

Straightsix · 16-07-2013, 09:30 AM

the calipers in the rear are basically the same except the caliper's piston size is larger. stock is 42mm piston and ZCP is 46mm piston. it's speculated it was designed that way to compensate for bias change of the larger front rotor size and repositioning from the new front carriers

I saw the above posted on another forum and was wondering whether CSL rear brake pistons are different to the regular M3 Coupe :-) ?

Pooky · 16-07-2013, 03:43 PM

Parts systems all say carry over calliper shared with M3 (and then Z4) but unique piston repair set shared with later E90 M3 which could suggest a larger piston?

northernjim · 16-07-2013, 04:42 PM

If I remember I will measure my rear pistons as they are in the big shed somewhere

Straightsix · 16-07-2013, 09:56 PM

Quote:

Originally Posted by northernjim

If I remember I will measure my rear pistons as they are in the big shed somewhere

Ok cool thanks :-)

**cantfind1** · 17-07-2013, 03:21 AM

Rear caliper pistons on CSL are indeed larger than standard M3....

16-07-2013, 09:30 AM	#1
Straightsix S5 - Full Throttle Join Date: Sep 2011 Posts: 357 Casino cash: $1823	M3 CSL brakes the calipers in the rear are basically the same except the caliper's piston size is larger. stock is 42mm piston and ZCP is 46mm piston. it's speculated it was designed that way to compensate for bias change of the larger front rotor size and repositioning from the new front carriers I saw the above posted on another forum and was wondering whether CSL rear brake pistons are different to the regular M3 Coupe :-) ?

16-07-2013, 04:42 PM	#3
northernjim Driving it like I nicked it Join Date: Oct 2008 Location: lancashire Posts: 2,082 Casino cash: $20572	If I remember I will measure my rear pistons as they are in the big shed somewhere __________________

16-07-2013, 03:43 PM	#2
Pooky S4 - Getting the hang of it Join Date: Jan 2012 Posts: 187 Casino cash: $11992	Parts systems all say carry over calliper shared with M3 (and then Z4) but unique piston repair set shared with later E90 M3 which could suggest a larger piston?

17-07-2013, 03:21 AM	#5
cantfind1 S5, Sport Off, DSC M-track Join Date: Oct 2009 Location: Sydney Australia Posts: 675 Casino cash: $6490	Rear caliper pistons on CSL are indeed larger than standard M3....