Johnm400 Posted January 29, 2019 Share Posted January 29, 2019 Do drilled or grooved brake discs produce more brake dust on the wheels? Quote Link to comment Share on other sites More sharing options...
SupraTRD_MK4 Posted January 29, 2019 Share Posted January 29, 2019 If you use a softer pad yes. The point of the holes or grooves is to help alleviate heat build up in the disc. I would recommend using a harder compound race pad for this. Hopefully experienced users will chime in. My AMG model car has drilled disc with 6 piston brembos and doesn't create much of the dust but the wheels over time do turn grey from their normal silver colour. By over time I don't meant in one week. But then again how spirited is your driving mate? Quote Link to comment Share on other sites More sharing options...
Johnm400 Posted January 29, 2019 Author Share Posted January 29, 2019 If you use a softer pad yes. The point of the holes or grooves is to help alleviate heat build up in the disc. I would recommend using a harder compound race pad for this. Hopefully experienced users will chime in. My AMG model car has drilled disc with 6 piston brembos and doesn't create much of the dust but the wheels over time do turn grey from their normal silver colour. By over time I don't meant in one week. But then again how spirited is your driving mate? To be honest i dont do many miles and dont thrash the car but i hate dirty wheels and i dont always have chance to wash the car. I do like the look of drilled/grooved discs but if they will dirty the wheels quicker then id rather just stick to standard discs. Quote Link to comment Share on other sites More sharing options...
SupraTRD_MK4 Posted January 30, 2019 Share Posted January 30, 2019 That is not the only issue mate. Over time if you don't clean the drillings, they tend to clog up with brake pad material. This then causes heat spots on the disc leading to fatigue in that region and small cracks start to appear over time. I clean my AMG disc everytime I wash the car or service it which is less than washing it but yeah. In the case of your scenario above, I would rather stick with the stock disc then and avoid headache Quote Link to comment Share on other sites More sharing options...
Wez Posted January 30, 2019 Share Posted January 30, 2019 Stock OE disks over cheap drilled every time Quote Link to comment Share on other sites More sharing options...
T2 MSW Posted January 30, 2019 Share Posted January 30, 2019 Stock OE disks over cheap drilled every time couldn't agree more Quote Link to comment Share on other sites More sharing options...
Johnm400 Posted January 30, 2019 Author Share Posted January 30, 2019 Cheers guys, ill go for Brembo stock discs and pads. Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted January 30, 2019 Share Posted January 30, 2019 Id look at Toyota prices, you might save money over Brembo Quote Link to comment Share on other sites More sharing options...
Sheefa Posted February 3, 2019 Share Posted February 3, 2019 Stock OE disks over cheap drilled every time Absolutely. Best out there with some good pads like Porterfield or Stoptech Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted February 17, 2019 Share Posted February 17, 2019 (edited) Drilled discs are designed to vent gasses from the pad filler material, or in the wet, steam. they are a lot more aggressive on pad wear, as are grooved discs as they act like crude cheese graters. The drilled ones, especially cheap Chinese ones are much more prone to cracking, A true "drilled" race disc is actually CAST with the holes in the casting, but even those are often considered throw away items after a hard wet race. For 90% of road / track day use a plain or sensibly grooved disc will give far less grief than a drilled one. Edited February 17, 2019 by Chris Wilson (see edit history) Quote Link to comment Share on other sites More sharing options...
Dnk Posted February 17, 2019 Share Posted February 17, 2019 (edited) We drilled some good quality discs on a formula Renault car a few years back and they were scrap after 1 race, cracked quite badly They were drilled properly on a CNC mill Edited February 17, 2019 by Dnk (see edit history) Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted February 17, 2019 Share Posted February 17, 2019 We drilled some good quality discs on a formula Renault car a few years back and they were scrap after 1 race, cracked quite badly They were drilled properly on a CNC mill Yep, I sometimes look around and think I am running some sort of enterprise to turn expensive items into low value scrap as fast as possible Quote Link to comment Share on other sites More sharing options...
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