Quote:
Originally Posted by gnx
I've had my car 13 years now and thought that it's about time to look into possible upgrades, so i pulled the trigger and bought me some used brake calipers.
I took them to a local brembo specialist to start with machining the front calipers.
He is not happy with what he saw in the pics from rallyroad.net that i had with me. He is concerned with the structural integrity.
Has anybody had any sort of issues with material degradation or anything?
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I ended up not fitting the brakes on the Z4M. I needed spacers of more than 12MM for those old MORR wheels that i've had for years and I didn't want that for fear of rubbing. (My car was in for a PSS10 fitment at the time, but at the end I managed to keep the prior ride height).
So I decided to fit the Porsche brakes on my e46 M3. Since I am not in the US I did not buy from RallyRoad but I sourced the calipers from the UK and bought adapters for both front and rear from Burkart Engineering.
For pads I opted for ferodo DS2500 front and rear. I am having the following problem (other than excessive brake squeal). I get an almost constant judder/vibration/squeal from the front right brake assembly while driving which is unacceptable. It goes away when I apply the brakes (that's when the squeal kicks in).
The guy who installed the system claims that since this is not OEM, there is margin for variance with the adapters that may cause the pad to contact the rotor at an angle and that causes the judder. I told him that this mod has been going on forever both stateside and elsewhere and that I have never seen anybody mention issues like this.
I think that if there is room for error it should be with machining the calipers which was his responsibility.
Do you guys know of anybody that faced such issue and how they worked around it? Any ideas? Are the pads perhaps thicker than others ?