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#1
03-01-2016, 08:57 PM
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New rotors - ECS or Centric?
 Debating on the ECS Tuning or Centric rotors. Front Cross Drilled & Slotted Brake Rotors - Pair Rear Cross Drilled And Slotted Brake Rotors - Pair (324x12) Centric looks like it costs a little more. I have them on my Z and haven't been that satisfied with them (slotted aerorotor BBK front / standard slotted rear) lots of issues with vibration, etc... due to uneven pad deposits however to be fair I did discover finally this was due to having too aggressive of a pad. Front Rear
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Indy Shops: Berkeley: German Auto Sport Phoenix: Babbitt Motor Werks | Arizona Bimmer Motor Works Reno: Reno Rennsport Rides: 00 BMW X5 4.4 93 Nissan 300ZXTT 88 Nissan 300ZXT Shiro #853 88 Nissan 300ZXT Shiro #773 84 Nissan 300ZXT 50th AE 78 Datsun 280Z Black Pearl 15 Yamaha WR250R 06 Yamaha R1 AE Email: WE350Z at gmail 
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#2
03-01-2016, 09:04 PM
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I thought that brake warning light was to indicate when the pads are worn as opposed to worn rotors?. I couldn't tell you if the ECS is better than the Centric or vis versa since I have never experienced either.
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#3
03-01-2016, 10:56 PM
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Light would come on for pads that are worn so low the sensor gets worn off. Then you replace pads and sensor. As for rotor thickness, I'd let them get right to the minimum if they aren't warped.
I have the cross drilled, slotted ECS rotors. They look great and have a great coating (why I bought them) and the price point is good. But mine developed a nice warp/vibration about 5,000km in. I'm just running them out and will likely source a Zimmerman or original BMW coated rotor for the next set. The coating is important and I've had good luck with Zimmerman on all my cars (street and track).
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Daily Drivers: - 2008 535i, 320,000km - 2004 X5 4.4, 01/2004 production, 420,000km - 1997 328i, 350,000km Track: - 1996 328i, track/race car, ~300,000km Winter: - 2013 Ski-Doo MXZ X 800 E-TEC, trail can - 2007 Ski-Doo MXZ Blizzard 800 HO - 2001 Ski-Doo MXZ 600 w/800 engine, exhaust - 1978 Ski-Doo Olympique 340 (vintage race sled) - 1977 Ski-Doo Olympique 340E 
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#4
03-01-2016, 11:36 PM
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+2 for the zimmerman rotors. Have them on my x and I abuse the hell out of them and have had no issues.
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2001 4.4i E53 172k 01/01 Mfg Mods: Led interior lights, rear footwell lights, black powder coated rims, carbon fiber wrapped interior trim, matte black ecs kidney grilles, arnott air springs(rear), rear console-quad usb chargers, K&N air filter, akebono ceramic brake pads & zimmerman rotors, black painted calipers, 5% rear window tint over factory tint, 50% front window tint, rear airbags activated, 4:3 nav head unit auxilary input, diy trans rebuild at 160k, spyder led tailights, hella horns
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#5
03-01-2016, 11:37 PM
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Jay, you are correct, the brake PAD indicator is only to measure /indicate when the inboard brake pad has worn down to the sensor, causing it to send a message to the light to come on!
 I like the Zimmerman rotors, they are pretty well built, and made with good quality steel. Ive used really cheap brands before, but have invariably been disappointed. Rotor thickness is dependant on pad aggressiveness, a long wearing pad will wear a rotor faster than a softer one. ( which is cheaper to replace, a rotor or a set of pads!?) Ive developed warped rotors after a nice mountain decent, (nice and hot!) and drove through about 2 inches of standing water (nice and cold!) the result was almost an instantaneous rotor warp! (a cheaper no name brand) ive learned it makes no sense to skimp on cheap brakes!
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2003 X5 3.0i (02/2003) sport package, Sapphire black metallic / Black Dakota Sport seats. compass mirror retrofit, trailer hitch retrofit, Prodigy P2 trailer brake controller installed, PDC retrofit, Lumbar support retrofit. heated rear seats retrofitted. Running boards retrofitted and subwoofer install in progress. 4.8is Brakes installed front and back. Bluetooth TCU installed, Rear Fog lights installed. Retrofitted reclining rear seat backs. 
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#6
03-02-2016, 12:01 AM
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I rolled the dice around 2.5 yrs ago, went with BrakeLabs rotors (USA made, 300 series iron, zinc plated).
Installed Cool Carbon pads. The set-up was around $400. In over 45k miles I am very impressed. Even with a track day at Sebring (5 on board for some lapping) and lots of towing (in TX/FL heat), the wear is nominal.
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'03 X5 4.4 Sport, last of the M62s (8-03 build date) I believe in deadication to craftmanship in a world of mediocrity!
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#7
03-02-2016, 04:07 AM
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#8
03-02-2016, 04:10 AM
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#9
03-02-2016, 04:11 AM
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#10
03-02-2016, 06:50 AM
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So consensus is Zimmerman? Where to buy them? I don't want to mess around with warping.
Can I reuse the sensors if they have not gone off? I guess my pads outlasted my rotors. They were replaced at the same time (by me 8 years ago). What fluid you guys running. Motul? What bedding process do you use? --Thanks!
__________________
Indy Shops: Berkeley: German Auto Sport Phoenix: Babbitt Motor Werks | Arizona Bimmer Motor Works Reno: Reno Rennsport Rides: 00 BMW X5 4.4 93 Nissan 300ZXTT 88 Nissan 300ZXT Shiro #853 88 Nissan 300ZXT Shiro #773 84 Nissan 300ZXT 50th AE 78 Datsun 280Z Black Pearl 15 Yamaha WR250R 06 Yamaha R1 AE Email: WE350Z at gmail
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