The one thing I notice with slots is a little pulsation of the pads hitting the slots. So for the street you might prefer no slots.
We sell a very nice rotor from the R56/R53 JCW cars. They are made by SP Performance. They come with a great anti-rust coasting and work great on all the cars we have installed them on. at $228.70 for the pair they are not going to brake the bank too. I always have one set in stock, but if you need two sets, i can have them in a few days. They also make a rear rotor to match for $132.20 for the pair. They also make then for the R56 cooper's since they are a different size. give us a call or find them on our webite (links above). Chad Detroit Tuned
Sooo...... Thought I would throw this in the pot. Disc Brake Australia. Anyone have any knowledge on these. Availability for R50, R52, R53 & R56 www.dba.com.au
Been hammering the Centric rotors with no problems. Cheap and track rated, maybe not the very best money can buy but dang good for the price... 2 cents
Centric has some fine rotors, nothing fancy, just a good quality basic rotor. I have used them on some other cars and the black paint on the hat and the perimeter of the disc holds up very well. However, not sure if it would withstand track temps.
I have a set of Brembo slotted front rotors and Brembo plain rears on my '05 R53. I've been to three HPDEs since I put them on and they still look great. Not sure why Tire Rack doesn't have the slotted fronts for the JCW
I put a set of Zimmerman drilled/slotted rotors on a couple months back and love 'em. They're available for a great price and are made in Germany! Also, you can get them color coordinated if you have the right color car... :beer
I went with bobcats for my vert. AX6 for the car that I track. Sadly, he did not have any TSW rotors in stock and could not get them for a few weeks, so I went with regular Zimmerman rotors. Just in time, too. Had about 1-2 mm of pad left. No idea why the sensor never went off.