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Advice on slotted rotors

nismo_au
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nismo_au Enthusiast

nismo_au

Posted
Posted

Hi all, I had a quick search around but couldn’t exactly find what I was looking for, so here it goes. Breaks are coming to the end of their life and unfortunately the standard rotors are now unable to be machined back any further (front currently at 27.1mm). I have decided to go with slotted rotors this time around as one brand that the break specialist suggested was only around $50 more than a replacement stock item. Now what I would like to know is if anyone has tried slotted rotors by a company called RDA (Rotors and Drums Australia) for their series 1 GTS-t R33 and what were they like etc?

At the moment tossing up the slotted RDA or the slotted DBA 4000 club-spec rotors, can anyone give me some reasons that would make my decision between the two easier? From what I can see on the forum most who have used the slotted DBA have been fairly happy. Information on anyone’s experience with either would be appreciated.

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https://www.sau.com.au/forums/topic/25466-advice-on-slotted-rotors/
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jlnewton Grand Master

jlnewton

Posted
Posted

Yeah, I put the slotted 4000 DBA rotors on about 3 month back now I think, front and rear. I since have done about two track days at Queensland Raceway (which equates to about 35 laps) and I am very happy with the result. We do sets of 7 lap sprints and have yet to experience any fade. Last weekend I was there and the first set was in 30+ degree heat and there was still no problem. The last set of the day I really gave them a hard time stomping on the brakes and still no fade (and took 1.3 sec of my PB!). So if you have a daily driver, and don't mind the odd track day I highly recommend the DBA club spec rotors. They work very nicely.

benm Grand Master

benm

Posted
Posted

I too put DBA-4000 Rotors front and rear around 5mths ago. Yet to use them on a track but combined with my RB74 pads (www.racebrakes.com.au) these things stop dammmmn good.

(Now all I need to do is get my master cylinder re-sleeved and im back in the game)

  • 2 weeks later...
GTRgeoff Grand Master

GTRgeoff

Posted
Posted

nismo_au I went to my local tyre and brake and he got me some discs, slotted front and regular rear (coulda got slots but they don't work too hard) for $650 the lot.

Want some info? I am going to my first track day on them next sunday at sandown so I can update you then on performance.

red900ss Grand Master

red900ss

Posted
Posted

The DBA 4000s weigh less than the standard discs and have very good heat dissipating properties. If you want a very good product for the price you can't go past them.

Just shop around to get the best price as there's plenty of places out there who'll be more than happy to overcharge you. :P

Paul SM Collaborator

Paul SM

Posted
Posted

I recently ran out rotor thickness with my R33 GTST and, as I do club supersprints, opted to get slotted rotors. The only ones I was able to secure at short notice were DBA, which Race Brakes Australia happened to have on the shelf.

In my case I needed the larger 296 mm diam. (DBA sent out the 268 mm ones before we realised there were 2 sizes and had to start again). I have to say I am very impressed with them; they're 32 mm thick and have great cooling properties thanks to the large ventilation latticework the core and the sheer mass of the rotor. Under heavy braking at Oran Park GP and Eastern Creek they did not exceed 550 degrees. It's possible to tell this by means of colour coded stripes on the rotor which change colour according to the maximum temperature reached.

The stopping power is, needless to say, also very impressive. I'm told the slots help to dissipate the gases which build up between the pad and the disc, as well as helping to clean the surface of the pad.

Worth every penny of the $490 I paid for the pair.

Mr R32 M-Spec Experienced

Mr R32 M-Spec

Posted
Posted

I agree. I wished I didn't have to spend 520 on getting them and fitting but afterwards I am so much happeir knowing that I can now stop. and they work. a guy in a merc slammed his brakes on woodville road and I almost rear ended him, the old brakes would not have pulled me up, good bye to the intercooler.....

Go DBA 4000's. try a repco store and they should be cheap. I was quoted 270 per rotor at other shops.

  • 10 months later...
bbenny Mentor

bbenny

Posted
Posted

"So whats the difference between the DBA slotted, and DBA 4000s??? Or isnt there a difference at all?"

you can get the 4000s in slotted and not slotted, i think thats the difference...

I got the DBA 4000 slotted from supercheap auto! dont laugh they were awesome, I called up and ordered them one arvo, they had them the next morn, and they only cost $900 for all four including the frieght costs.

best part is they are just simple bolt on replacements, so i had them on in about an hour and a half.

what was even better is that they stopped all the squeeling my performance pads made on the std rotors.

havent had them on the track yet, but they feel awesome on the street.

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