New Rotors

[Liquid]

Hey all,

Its time for me to get new rotors and i'm thinking some nice cross drilled ones are in order,

Any suggesions on brands/models/prices or other opinions?

[Abo Bob]

Don't get cross drilled ones. The cheap ones, ie the ones you and I can afford can crack around the holes and don't make any difference to the cooling anyway.

I use DBA4000 slotted but I think it was Roy that posted not so long ago about some RDA (I think it was RDA) rotors that are just as good as DBA and are cheaper.

Try Racebrakes in sydney and look for that thread.

www.racebrakes.com.au

[Abo Bob]

Here ya go.

http://www.skylinesaustralia.com/forums/sh...ighlight=RDA%2A

[Mik]

I'm up for new rotors at the moment too. I have not been too lucky with DBA rotors in the past (mainly shuddering problems)...so I'm going to try something else this time.

A contact in Japan has recommended some Japanese made rotors (not endless, project mu etc). They will cost a bit more than the DBA's by the time they are landed, but hopefully they will be better.

The workshop who recommended them uses them on their race car, so hopefully they will be okay.

[Ronin 09]

I've been thinking about this whole drilled rotor thing for a while.

See, an R32GTR has drilled rotors factory, and they're curved vane which says to me that they're not all that crap.

Also, I would consider that if you are smart, warm up and cool the rotors sufficently there should be not too many issues with them...

[Baz]

Make sure you shop around for the right type of rotor to get because there are so many overpriced brands around that just don't give you the bang for your buck that many other brands do. DBA's seem to be highly recommended and a few people on these forums seem to be using them.

Question though. Why are you replacing your rotors in the first place?

[Silver-Arrowz]

I've had DBA4000 on my previous GTR and they were great. The standard R32 rotors cracked around the holes, but then again the car saw lots of track time so its pretty much expected.

[t01-100]

The only drilled rotors to get are genuine Brembo. They arn't drilled, but actually cast with the holes so stronger and don't crack as easy, but are expensive.

DBA4000 (slotted) would be my recommendation, I have now swapped to DBA5000 (slotted and with alloy hat), for OEM Brembo R32/33/34 these are approx $550 each, and only available for the front.

[Abo Bob]

I can't see how a particular brand of rotor could cause shuddering.

[Baz]

I can't see how a particular brand of rotor could cause shuddering.

Agreed. But different brands of rotors deteriorate at different rates. The only thing which sets different brands apart is its ability to disapate heat to keep overall heat on the disc down because in the end, heat is the only thing that is causing the warping and shuddering effect in the discs themselves.

[Mik]

Agreed. But different brands of rotors deteriorate at different rates. The only thing which sets different brands apart is its ability to disapate heat to keep overall heat on the disc down because in the end, heat is the only thing that is causing the warping and shuddering effect in the discs themselves.

Me (and quite a few others) have had issues with shuddering from when the rotors were new. They never had a chance to get hot. I'm not saying they all do (I'm sure they don't). But it's happened to me before, so I'm going to try something else this time.

[Duncan]

The 32 GTR did come with cross drilled rotors....but no later/improved models did.....

there is something in that for all of us

There are still some high performance cars that run drilled discs but they are totally different, the holes are cast into them not drilled after the disc has been cast.

Don't bother with drilled, slotted are fine if the disc is adequate for car and its use