[flash]

just last friday, in response to somebody seeing my rotors and commenting that they were shot, i responded that the pads were about half done, but i thought i had at least another 1000 miles or so. then, as if the porsche gods heard me, the next time i drove the car, the brakes squeaked. they had never done that.



so, it was time for new front rotors.



i had cross-drilled zimmermans on there, and while they didn't crack or anything like that, they also didn't wear all that well. there were some pretty uneven grooves all over them. i was running porterfield R4-S pads, so the harder material probably just chewed them up.



another reason is likely the hole pattern. while the zimmermans on the rear had nice radial patterns, typical of most rotors, the fronts looked a lot more like a shotgun pattern. the holes were also pretty small, and not chamfered.



so, in shopping around, i ran across stop-tech. these guys are arguably the best in the business when it comes to brakes and what to do with them. but, i had never thought about getting rotors from them (no real reason why)



one thing i noticed about the stop-tech rotors is that there is a left and a right. zimmermans were both the same.



also, the hole pattern is normal, and larger holes, with chamfers - nice!!!



on top of that, the rotors are coated and painted already. no messing around spraying paint to keep them from rusting. nice!!!



i ordered a pair.



old zimmerman

   

new stop-tech

   

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[MB968]

Used them on my 3000GT VR-4 and liked them. Seemed to be fairly high quality, but that's subjective.

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[ds968]

The coated / painted feature is a great "bonus" .



( Of course you could have bought tne 997 rotors and pads 4 wheel set at the bargain price of $ 15,000. $ 22,000 if front and rear sets are bought separately ). Did you pay less for your stop-tech ones :-);-))) ?

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[Ernie]

What type of pads are you going to go with now, and how comparable was the price? I know that brakes and tires are "no scrimp" items, but was wondering the price difference.

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[Cloud9...68]

Very nice. Did you happen to measure the thickness of your old rotors with a micrometer? I have the same Zimmermans you had, and am wondering how much life I have left in mine.

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[MB968]

There is a minimum size marked on the rotors. Sometimes it is a little hard to see, but if you search for it you will find it.

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[flash]

same pads (porterfield R4-S)



did not measure. i almost never turn rotors on a performance car. they don't cool as well. these were definitely done though.

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[Cloud9...68]

I have Porterfield R4-S's as well. Interestingly, my front rotors aren't grooved in the slightest, and there isn't even a hint of a lip at the outer edge. Plenty of life left in the pads as well. I think I'm good for now, but the Stop Tech's will definitely be under consideration when it's time to replace.

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[flash]

not sure why they did that. didn't feel weird at all.



by the way, cost was the same.



i'll be putting it back on the ground tomorrow afternoon, and will bed the pads. looking forward to driving it again.

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[Ernie]

Nice! Thanks for the info.

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[parptarf]

These look great!

I wonder if I could get them here or what they would cost to be shipped.

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[flash]

bedded in the pads. so far so good.

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[parptarf]

Where did you order these, Flash? I'm looking into getting these instead of drilled Zimmermans.

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[williamoss]

Speaking of Rotors. I have the car that I bought from Pete of RS Barn. It is a 1995 coupe MO3O car. MY question if this, my cars has cross drilled rotors in the front but not in the rear. Some cars I have seen have cross drilled rotor in the rear. Anybody know why some do and some do not?

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[PorscheG96]

M030 is supposed to have cross drilled rotors both front and rear. Sounds like they installed standard rotors on your 968 to save $.

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[flash]

that's what it sounds like to me as well

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[MCL968]

I recently spoke to Rob at Rotor Lab about rotors, and he is interested in branching out to the 968. He buys blanks from the same asian suppliers that most of the big companies use, then he machines them, drills and chamfers them, and puts on a ceramic-zinc coating.



Here is his ad for Audi rotors:



http://portland.craigslist.org/clk/pts/4545156097.html



We are working out the details, when he has a price, I will let the rest of you know. I may give them a shot just to see how they work.

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[flash]

well, unless he can get down around $100 per rotor, he's going to be hard pressed to attack this market, because that's what people are paying for rotors.

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[Ernie]

Flash, any update on how the stop tech rotors and porterfield brake pads are working out? I'm going to have to do a brake job soon and am wondering if that is the best set-up? I see you went with cross drilled but not slotted. Is there any benifit to the slotted or is it overkill for a street car? Thanks

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[flash]

so far so good. no noise, vibration or scarring.



re: slotted vs drilled. i prefer drilled, as they tend to be quieter and easier on the pads. slotted may cool better, and scrape water away better, but for a street car, i prefer drilled. the key is to get large holes, make sure they are chamfered, and that they do not interfere with the vanes. fortunately, the stop tech rotors have all of the above.



definitely seems to be an improvement over the zimmermans. i'll likely be changing the rears to match soon. bugs me a bit though, as there is zero wear on my rears right now. - lol - oh well. it's only money.

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