Rotors advice needed

[Cabrio]

Hi all,

I need to change my front rotors yet again. I am not getting cross drilled, blanks only.

Last time I used Zimmerman, I want to try Brembo this time. Any feedback? I am just wondering if I should stay with Zimmerman.

Btw, I have a e46 330ci cab.

Thx.

[thgear]

Hi all,

I need to change my front rotors yet again. I am not getting cross drilled, blanks only.

Last time I used Zimmerman, I want to try Brembo this time. Any feedback? I am just wondering if I should stay with Zimmerman.

Btw, I have a e46 330ci cab.

Thx.

did your zimmerman rotors warp or crack?

if not, stay with them.

[tanney]

Personally I am pro Brembo. I have never had an issue with Brembo rotors, brake pads and calipers yes, rotors no.

[ScotcH]

Either one will do fine ... just stay away from anything made in China. I have the Zimmermans on my race car right now, and they are working out fine.

[Cabrio]

did your zimmerman rotors warp or crack?

if not, stay with them.

Warped.

[Cabrio]

You giving them time to cool down after a hard run?

Yes. I usually do 20 to 30 minute runs and do at least one cooling lap before entering the pit

Standing on the brake pedal when in the pits?

No.



Full Story
======

After the first track day of the year I had serious OEM pad transfer on the front Zimmerman rotors causing juddering. I then took the rotors to my mechanics and had them turned.

I was aware that after they were turned they would be more prone to warping.

About one month ago I changed the front pads to Ferodo 2500 and the rear pads to Axxis Ultimate to get ready for next track day. I went thru the proper bedding procedure and had a nice thin layer of even transfer on the rotors.

At Shannonville on Tue I think the rotors simply overheated and warped.