Don't get me wrong. The brakes are good, just not like my M3
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pretty much.
330i Front brakes are 325mmx25 Rotors
STD M3 front brakes are 325mmx28 Rotors
ZCP M3 front brakes are 345mmx Rotors
The pad size is the same on all 3.
The position of the caliper is different on the M3s and will require some modifications to the caliper bracket to install the STD M3 caliper. The work alone is not worth the gains from a 3mm wider rotor. ZCP rotors are far more expensive and heavier.
Rears
330i rear brakes is 320mmx22
M3 rear brakes is 328mmx20
This requires a lot modification and ultimately would be useful only if you did a M3 rear end swap.
Like BP said, its a waste of money unless you track.
Great info gentlemen. Thanks. I just assumed M3 brakes were the way to go.
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M3 (maybe even CSL) pads might be the way to go. They definitely have more bite. I know they'll fit in the front, not sure about the back.
Just get some good pads. I track and autox my zhp. Sonoma raceway doesn't have as big of braking zones like some east coast tracks, but the stock rotors with upgraded pads can lock up my wheels at just about any speed, even after multiple hot laps.
Also, maybe some light weight wheels. If you're on style 135s, they're crazy heavy and greatly impact stopping performance. I got some 17x8.5" apex arc-8 that are 10 pounds less each. Best single mod I've done on the car, hands down.
His: 05 330 ZHP Imola Red - 07 Z4 M Coupe Imola Red
Hers: 04 330i ZSP
2004 325 M56 Steel Blue Metallic - Sold
Stephen's DD & AutoX/HPDE Build Thread
Stewart WP - Z4M LCAB - M3 trans/motor mounts - DICE MediageBridge Duo - ARC-8 17x8.5"
DrVANOS - Mason Engineering Race Strut Bar - E30 Exp. Cap - Custom Black+Beige Interior - M3 Seats
Bilstein PSS10 - Turner Sway Bars 27/21 - ECST RTAB Limiters - R.E. RSM
Echoing what's already been posted:
More aggressive pads, SS lines, and a high temp fluid - you'll be set.
/thread
Happy driving
His: 05 330 ZHP Imola Red - 07 Z4 M Coupe Imola Red
Hers: 04 330i ZSP
2004 325 M56 Steel Blue Metallic - Sold
Stephen's DD & AutoX/HPDE Build Thread
Stewart WP - Z4M LCAB - M3 trans/motor mounts - DICE MediageBridge Duo - ARC-8 17x8.5"
DrVANOS - Mason Engineering Race Strut Bar - E30 Exp. Cap - Custom Black+Beige Interior - M3 Seats
Bilstein PSS10 - Turner Sway Bars 27/21 - ECST RTAB Limiters - R.E. RSM