Replacing 370Z Rotors
 

I'm looking at replacing my brake rotors because I'm getting vibration when braking at more than 40 mph. I'm looking for budget oriented street rotors that can also be used for some light track duty that I hope will be in my future someday. I have decided on the Hawk Performance Ceramic pads for daily use (mostly because of my previous experience with them). I plan to switch over to Carbotech XP8s if I ever make it out to a track.

Regarding the Z1 brake rotors, does anyone know what blanks they use? I found a 3 year old post here that matches what their website says they use, which is BPI blanks (I have no clue who this company is). But I also found a less than year old post here on this forum where Z1 says they are Centric (I know these guys and have used their PowerSlot rotors previously with good experience).

Also regarding the Z1 cross drilled and slotted rotors, can someone confirm whether the cross drilled holes are chamfered or not?

The other rotors I am looking at are the EBC USR Ultimax slotted rotors. I would be interested if anyone has any negative comments on these - I have heard several positive reviews from fellow members. The only complaint I have is they are painted black but it just wears off during the bedding process :ugh2: It think it would be pretty cool if they stayed black.

I looked at the DBA rotors (5000 for front, 4000 for rear), but they're just a tad expensive. If anyone else has a quality recommendation, I am open to it, but please keep in mind that I have looked at most of the standard options (OEM, Centric, StopTech, PowerSlot, PowerStop etc) and narrowed it down to the two I listed above.

Thanks in advance :tiphat:

That's just it about the ebc rotors. There is nothing negative lol

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Given only your two choices, I'd go with the EBC rotors. Nothing against Z1's stuff, but EBC is in the brake business. As pointed out in another suspension thread, Z1 sells some quality stuff, but given those choices........

I think I had already made up my mind... just wanted to give Z1 a chance since they're a forum sponsor :icon17: but I'll get the EBC brakes from a forum sponsor anyway.

I run the EBC slotted and dimpled rotors on two other vehicles I have with no problems. ;)

I went with z1 slotted. My car turned into a raging sybian again after about 500 miles. These cars just have brake issues. Dump it and buy a different one, or hit your dealer up every few thousand miles. thats what I'm going back to doing.

Never had a problem with brakes on my Z.

lol :gtfo2: for suggesting that I dump the Z. I'm sorry that you're so hard on your brakes that you're having problems. I'm pretty sure my wife is the cause of my problems with the brakes (she is pretty hard on them). I'll be fine once I replace them :tiphat: Also, your suggestion of going to the dealer is just asinine. They won't cover the rotors under warranty, not to mention, I'm out of my Nissan warranty anyway (maybe they will cover them very early on... but not after 30K+ miles).

Read his other posts. He's not exactly a fanboi of the Z.

I had the Z1 brake upgrade (Pads/Rotors/Fluid/SS Lines) done Feb 2012, and have over 20k mi on them since.

I have the Cross-Drilled/Slotted. The Drill holes are sunk in, if that's what you're asking about them??

If I could do it again, I would just do slotted instead of cross drilled/ slotted since I went for aesthetics rather than pure because racecar.

:icon14:

Something's wrong with your car. Not 370s in general

Here is an example I found to explain the idea. The holes circles in purple/pink appear to be chamfered (it is possible that this was not done on purpose in this photo - I'm not sure where it came from). The other holes are not chamfered. If cross drilled rotors are for racing application, they should be chamfered to reduce the likelihood of cracking. Of course, the best solution is to have the holes cast in place when the rotor is cast.

http://i17.photobucket.com/albums/b8...ts/Chamfer.jpg

yeah, I'm aware... that's why I laughed at his response :icon17:

From some extensive reading:

Solid blank rotors = best heat dissipation, best for racing.
Slotted rotors = reduced heat dissipation, better bite and performance in the wet.
Drilled = reduced heat dissipation due to less material, faster pad wear, minimal cooling from holes, prone to cracks from excessive heat cycles, worst for racing.

I simplify but it's amazing the conflicting info out there. :icon14:

:iagree: wet performance is exactly why I went with just slotted rotors... drilled rotors should be used for looks only

I haven't tracked my car, but I would like to someday. I need some basic upgrades before that can happen, brake rotors being one. For a DD, the Z1 cross drilled and slotted would be fine, but I asked about the chamfer just in case I do get it on the track, which would be light duty anyhow. However, I went with the EBC USR slotted rotors for the bonus wet performance safety factor, since I encounter rain way more than the track despite the fact that we are in a several year long drought :(

I do believe the Z1 CD/S rotors are chamfered. But I will go outside tomorrow and double check for you so I'm not giving you bad info. :tup:

:iagree: as well. I went with CD/S for aesthetics vs pure racecar. I figure they will suffice until I'm ready for this car to be dedicated race car, then I will look at the DBA5k/4k sets.

If you're not racing a Z then the looks are most likely important. I will be getting cross drilled rotors. Should be fine for regular/somewhat spirited driving.

They have been for me:

20k mi so far, no wear marks, no cracking visible.

They've endured:

Several spirited runs
ZDayZ (Dragon/Hellbender/Cherahala)
Heavy Rains with no fading

Originally with PosiQuiet pads from Z1, switched to Ferodo DS2500's in May.

Jarblue, you know that the vibrations that you feel are typically from the brake pad compound and by resurfacing the rotors, it should make it not vibrate anymore. Are you saying that you used the Hawk Ceramic Pads and got it vibration?

Yes, I am aware that "warped rotors" are typically the result of uneven pad depositing on the rotor surface and that resurfacing or "turning" the rotors can prolong their life. The vibration I was getting was from stock rotors and stock pads, and since they were already at 35K miles, I decided to replace both rotors and pads in the front. I had already decided to go with the Hawk pads because I have used them on a previous car with good results. I ended up getting the EBC USR slotted rotors and swapped out the stock fluid for ATE SuperBlue. I did this all last Tuesday and had the amazing opportunity to drive it on the Circuit of the Americas track this past weekend. The braking performance on my Z was excellent :tup:

Just making sure since a lot of people have a misconception of a warped rotor :tup:

:tiphat:

Nice to hear!! I just might mimic your set up next year when the brakes will be due!

This is true but don't underestimate peoples need to spend money on their car for no good reason. :icon17:

:bowrofl: :bowrofl: :bowrofl:

Yup! I knew I could get the rotors turned for <$50, and the pads were only half worn. And a friend gave me the brake fluid. What did I do instead? Spend $400+ to replace front rotors and pads :rofl2:

But I still think it was a good reason... safety features likes brakes are almost always a good reason to spend money :tup:

Haha. I never understand why people bother resurfacing rotors. They never last as long as fresh new rotors and find it a waste of money.