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YOUR RESEARCHBest place to buy rotors?
Leading reported evidence
Check manufacturers spec and tuv and iso certifications
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No because I'm a mechanical engineer who has spent many years sourcing components for mobile equipment in the harshest mining service and aviation environments and I checked the manufacturers spec and tuv and ISO certifications before I bought them.
Leading evidence: 'Check manufacturers spec and tuv and iso certifications' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check manufacturers spec and tuv and iso certifications' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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I know that this is blasphemous on this site but I used: BrakePerformance.com
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The value of forums like this is to see users that have used non oem parts with bad, good or better experience.
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I have used other vendors as well, but Pelican has for me gone above and beyond with cust.
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Full Race rotors are actually fairly soft so the pads bight into them better but are used for a ssingle race .
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Check manufacturers spec and tuv and iso certifications
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Read evidence and context
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No because I'm a mechanical engineer who has spent many years sourcing components for mobile equipment in the harshest mining service and aviation environments and I checked the manufacturers spec and tuv and ISO certifications before I bought them.
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Suggestion
In general if a supplier makes a part like a brake rotor for porsche (or any oem) they are going to have to run it through all the tests porsche requires and continuously monitor outgoing quality and run long-term reliability testing.
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Suggestion
I got OE rotors since I figured the original ones went 120K miles so a second set will also do that, and I have the confidence when stomping on the brake pedal.
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Suggestion
Aftermarket only suppliers may meet,exceed or not meet the original oem specs - and yes rotors may be offered with harder or softer metal to trade life with performance - or be heat cycled differently (to save cost), use less pure grade of raw material etc.
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I think if you compare pelican's prices are pretty good .
http://www.pelicanparts.com/catalog/...pg3.htm#item15
Sebro rotors are oem quality and only about 100 bucks . You can get rotors cheaper than that from China , if safety or stopping isn't an issue for you .
I've got sebro rotors , cool carbon pads and goodridge stainless steel braided brake lines on my car , all sourced from pelican . Nice combination .
If you want a nice upgrade for more money but less than a big brake kit
Girodisk are nice if you do the odd track day .
http://www.girodisc.com/Girodisc-Fro...de_p_6547.html
that may be one of a few items on which pelican is competitive. Forget about it if you want OE parts.
i've also heard some shaky things about the SEBRO rotors
You know sebro is a german oem supplier right ?
I've used them on several cars without issue .
If you know a better product from a better supplier post the link.
Just called my local Porsche dealer to price rotors. Im a dealer so I thought I might get a good price. I got $60 off per rotor for the fantastically discounted price of...wait for it...$186 per rotor.
Pelican it is. Thanks guys
Never heard of a rotor that didn't wear faster when driven hard ie on the track.
Especially when used with performance brake pads .
All OE spec rotors are going to have almost identical metalurgy and wear rates .
You want something for track days , your spend jumps from 100-200 per corner up to 300-500 per rotor and up.
I know that this is blasphemous on this site but I used: BrakePerformance.com
I spoke with them on the phone at one point and they were very helpful. I think they are in LA.
$280 for all four rotors including shipping. They are cross drilled.
1 x Cross-Drilled Brake Rotors Front Front Two Rotor Set (#DB-37034L+37035R)
- 1999
- Porsche
- 911
- Carrera, Carrera 2, Not Turbo, Not Turbo Look
Price: $139.52
1 x Cross-Drilled Brake Rotors Rear Rear Two Rotor Set (#DB-37036)
- 1999
- Porsche
- 911
- Carrera, Carrera 2, Not Turbo, Not Turbo Look
Price: $120.11
+996 for warehouse 33
Jason provides superior customer service, emails you back sometimes in seconds.
Pricing is hard to beat and I bet that he would probably meet or beat a competitor's pricing if he can.
I got parts from him next day with free freight (depends on $$ bought) and no CA tax
Are you dense?
The rotor wears faster under hard driving when compared to OE rotors, not compared to soft driving
As for your comment about OE spec...how do you know these are OE spec? because pelican told you so?
No because I'm a mechanical engineer who has spent many years sourcing components for mobile equipment in the harshest mining service and aviation environments and I checked the manufacturers spec and tuv and ISO certifications before I bought them. Being German made , still means something . Certification and traceability of supply line components is easy to follow if you know how with EU components And near impossible with Chinese and Indian sourced aftermarket parts .
Part of my job is investigating accidents , through this expirience I learned that brakes are something you don't compromise .
Not dense , just an engineer .
I'm no sebro salesman , there are plenty of other good brands .
I like the british made ebc and U.S. made girodisks too.
I've had the current sebros on my 996 for a year, and used them on previous audis and a 944 track car (although I did eventually go with ebc track disks and brembos) . Never had any issues .
You came out bashing a supplier and forum sponsor for their prices , which anyone can see are competative with any other online supplier and crapping on a product you've never used .
Why?
I should mention that rotor wear is different depending on the intended use of the rotor .
A harder rotor will last longer but have a much lower coefficient of friction than a softer one , generally speaking ( if both use quality material)
Probably best exemplified in motor cycle disks
Long lasting bmw disks were originally made of stainless steel .
They don't rust and last a very long time . But from a stopping point of view are not as good as a cast iron rotor .
Cast iron rotors don't last anywhere near as long and they rust but they make for much more powerful brakes .
Full Race rotors are actually fairly soft so the pads bight into them better but are used for a ssingle race .
An OEM rotor is designed to give good performance and a long life . Two somewhat conflicting purposes but one the designers decide is the best compromise and this becomes the OE spec.
In general if a supplier makes a part like a brake rotor for porsche (or any oem) they are going to have to run it through all the tests porsche requires and continuously monitor outgoing quality and run long-term reliability testing. Porsche will buy those for oem production and then buy some for the parts department - with significant markup and then dealer also adds significant markup. Parts supplier can take same part and sell under its own name through someone like pelican with significantly less mark up through the whole channel. For most "oe" parts there will be insignificant differences. Aftermarket only suppliers may meet,exceed or not meet the original oem specs - and yes rotors may be offered with harder or softer metal to trade life with performance - or be heat cycled differently (to save cost), use less pure grade of raw material etc. Etc.
The value of forums like this is to see users that have used non oem parts with bad, good or better experience. Most of this is opinion , not statistically significant scientific data, but still useful to steer away from obviously bad parts.
If you want least likelyhood of trouble and are willing to pay - no issue buying oem. If you are looking to save money - OE is generally a good way to go, pelicans quality ratings can help guide, as can other user experiences with the parts.
I work for a supplier to the auto industry and see the differences , returned failures, etc etc every day. What is the best quality is a very complex question to answer.
Bottom line - +1 for Sebro
^^
With that in mind, has anyone bought bad rotors at any price?
on another forum I am on, one of the guys that does a lot of racing has tried a lot of different rotors and IIRC, basically said he found no real difference in performance with the el-cheapos compared to the expensive ones
Many offshore brands have poor metalurgy , I've seen them corode very quickly in a salty Canadian winter and crack between the cross drilled holes under moderate use.
Zimmerman Ecoat rotors from Pelican. The same damn thing that comes in the Porsche Box.
Note: these rotors should never be turned regardless of what anyone tells you.
Did you look at the photos in the link I posted? If you look carefully, you will see the cast rough texture inside the holes. If they were drilled, you would expect shinny smooth surface.
Looks like machine marks to me
If you were to cast those holes you'd form points in the rotor body that didn't have uniform metallurgy , this would creat disparate wear rates in the rotor surface , exactly what you don't want in a rotor , you'd also get different heat loading . Maybe I'm off but I'd have to see an engineering justification and not an Internet forum members picture and equally fuzzy speculative logic . It could just be drill or laser slag inside the holes
I wound up ordering from warehouse33 and the process and shipping was super easy super fast! Wound up getting Sebros and some pads while I was at it. Now I just need to get off my *** and get then on the car!
I did turn my rear rotors at autoparts store - worked ok - they were still in min thickness spec , but the concern would probably be if you go below spec before you get to the end of your second set of pads. Worked fine at track day - but I deposited pad gunk from hot rotors on the rotors and had to replace them due to vibration anyway - now I know why they say don't hold the car on the brakes after autocross or track run ! So, yes , in theory you can turn the rotors , but the cost of new ate or sebros is not that much versus the time to replace them - so I wouldn't bother next time
So ATE coated rear rotors for my '02 from Warehouse33 are almost half the price of the Zimmermann or Sebros coated. Are they half as good or twice as bad? Any input on the ATEs? Need a set in the next 2 months. Or is it just smarter to buy the OEM ones....and paint the top hats? Any one have poor experience with the ATEs?
FWIW...I cannot speak for others, but when I decided to do my front rotors because at 120K+ miles they were grooved and definitely had a "lip" on them, I went Porsche OEM and painted the top hats prior to install. I am not comfortable to experiment. I got OE rotors since I figured the original ones went 120K miles so a second set will also do that, and I have the confidence when stomping on the brake pedal. More $ I know, my decision. One less thing to worry about or even think about IMHO.
Look for Meyle rotors on ebay
They run around $75-$80 a pair
I ave been running them on my Boxster for over a year and lots of track and AX days without any problems
Of course if you don't want Meyle, Jason @ warehouse33auto.com is a great way to go
Zimmermann and Sebro are the best sellers, but seem to be selling more ATE's lately. I had a set of the ATE coated on my non-Porsche daily for over 3 years with no problems.
-Jason
+996
If you ain't buying on eBay or Amazon, Warehouse33auto is the place to go.
Don't bother with anywhere else. You won't find better pricing nor better customer service
Jason rocks!
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