Jump to content
The mkiv Supra Owners Club

Drilled/grooved discs - more dust?


Johnm400
 Share

Recommended Posts

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?

Link to comment
Share on other sites

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.

Link to comment
Share on other sites

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

Link to comment
Share on other sites

  • 2 weeks later...

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 by Chris Wilson (see edit history)
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. You might also be interested in our Guidelines, Privacy Policy and Terms of Use.