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DBA rotors HD series 4000XS

KING46Calais V

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Anyone have or heard any feedback on DBA 4000XS rotors?

Might fit these instead of T3's just to be different.

They look a step up from the street series gold with just the 4 slots. These are a bit more expensive than T3's as well.
 

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Ron Burgundy

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DBA makes quality products. Have not seen reviews but I imagine they are really good. They definitely look best in the whole range in my opinion. I was looking at them but DBA does not make them for my front brake setup...
 

eman1

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Generally you go to DBA 4000 due to heavy use (motorsport etc), The XS series being cross drilled is not suitable for this use as more prone to cracking as its more a visual thing. You'd be better off with DBA 4000 standard or T3 if your using them for harder use or just standard T2 if just road use.
 

Ron Burgundy

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Generally you go to DBA 4000 due to heavy use (motorsport etc), The XS series being cross drilled is not suitable for this use as more prone to cracking as its more a visual thing. You'd be better off with DBA 4000 standard or T3 if your using them for harder use or just standard T2 if just road use.
This whole drilled rotors crack talk is bit of bs..Maybe in theory more likely to crack than non drilled rotor...but when was the last time you heard about this happening with DBA rotors in Australia..
I think it's grossly exaggerated view...
 

eman1

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This whole drilled rotors crack talk is bit of bs..Maybe in theory more likely to crack than non drilled rotor...but when was the last time you heard about this happening with DBA rotors in Australia..
I think it's grossly exaggerated view...
On the street you won't crack them.

However my cracked pair of DBA 4000 says it does happen and if it happened to a T3 it would be worse on a cross drilled rotor.

Even the DBA site mentions the XS for show and to go T3 for intensive braking. Yes the chances are low but for anyone using them for their intended purpose (motorsport) the risk vs reward of the looks isn't worth it.

This is what a rotor failure can look like on track.
 

Ron Burgundy

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On the street you won't crack them.

However my cracked pair of DBA 4000 says it does happen and if it happened to a T3 it would be worse on a cross drilled rotor.

Even the DBA site mentions the XS for show and to go T3 for intensive braking. Yes the chances are low but for anyone using them for their intended purpose (motorsport) the risk vs reward of the looks isn't worth it.

This is what a rotor failure can look like on track.
Oh wow. That's nasty
 

eman1

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Oh wow. That's nasty
Yep, its very uncommon. My cracks are far less than that but it does happen. I still use DBA but I think their advice to avoid the cross drilled rotors for heavy braking applications is justified seeing as 4000 series T3 still crack on occasion of very hard use.
 

panhead

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On the street you won't crack them.

However my cracked pair of DBA 4000 says it does happen and if it happened to a T3 it would be worse on a cross drilled rotor.

Even the DBA site mentions the XS for show and to go T3 for intensive braking. Yes the chances are low but for anyone using them for their intended purpose (motorsport) the risk vs reward of the looks isn't worth it.

This is what a rotor failure can look like on track.
I may be mistaken but that doesn't look like the rotor failed due to cracks coming from the holes.

Also not all rotor holes are drilled, some are cast (more expensive) and those that are cast are much stronger and less prone to cracking, when it comes to rotors you get what you pay for.


Cracking around drilled holes




Heat is the big killer of rotors whether they are drilled or not and that's why they fail at the track







.
 
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eman1

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I may be mistaken but that doesn't look like the rotor failed due to cracks coming from the holes.

Also not all rotor holes are drilled, some are cast (more expensive) and those that are cast are much stronger and less prone to cracking, when it comes to rotors you get what you pay for.


Cracking around drilled holes









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No it wasn't directly on the holes. I was more highlighting that DBA rotors do indeed fail on occasion and the seriousness of a failure.
 

panhead

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No it wasn't directly on the holes. I was more highlighting that DBA rotors do indeed fail on occasion and the seriousness of a failure.
Definitely all rotors will eventually fail if given enough punishment, even those designed and manufactured to the nth degree for serious track and competition use.

I have to say though that drilled rotors are just for looks and if it a street car then I think they look great.






.
 

redvxr8clubby

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I'm pretty sure that the 4000XS is the same type I have on my VX R8 Clubby now (330mm in the case of the VX R8) . They look like a very nicely made rotor. I don't drive the car all that much and no hard braking, so can't say how they go in those conditions.
 

KING46Calais V

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My car never sees the track so it's mainly for a look and to enhance braking in the wet and be an upgrade from factory solid rotors.

I'm sure all rotors can crack if they are flogged no matter how good they are. I think Ron was just implying that DBA are much better quality than your cheap eBay junk. But that still doesn't make them bulletproof.

I'm interested to find out why the big euro performance manufacturers still fit drilled rotors to their cars.
 

MattSAU2XR8

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Looks better - so people will pay more, and so more profit.
 

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enhance braking in the wet and be an upgrade from factory solid rotors.
Braking in the wet would be tyres as brakes can easily cope in the wet.

A lot of people confuse plain rotors and solid rotors. The VF has non slotted vented rotors on all 4 corners not solid rotors, in non heavy use these actually perform better as there is marginally more surface area for the pad.

Slotted or drilled see benefit when the pads heat up significantly and produce gas when needs to wiped by the slot to maintain good surface contact. (This problem is not as much an issue now as pad compounds are much better than in the past).
 

Ron Burgundy

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Braking in the wet would be tyres as brakes can easily cope in the wet.

A lot of people confuse plain rotors and solid rotors. The VF has non slotted vented rotors on all 4 corners not solid rotors, in non heavy use these actually perform better as there is marginally more surface area for the pad.

Slotted or drilled see benefit when the pads heat up significantly and produce gas when needs to wiped by the slot to maintain good surface contact. (This problem is not as much an issue now as pad compounds are much better than in the past).
I am about to fit T3 rotors in next few weeks. I only bought them because they look good.
 

wetwork65

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Braking in the wet would be tyres as brakes can easily cope in the wet.

A lot of people confuse plain rotors and solid rotors. The VF has non slotted vented rotors on all 4 corners not solid rotors, in non heavy use these actually perform better as there is marginally more surface area for the pad.

Slotted or drilled see benefit when the pads heat up significantly and produce gas when needs to wiped by the slot to maintain good surface contact. (This problem is not as much an issue now as pad compounds are much better than in the past).
Thanks eman1 - my opinion has always been that more contact area gives better braking.
 

panhead

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Slotted brake rotors use slots carved into the flat metal surface to move gas, heat and water away from the surface of the rotors which ultimately gives better surface contact.

The offset to the extra surface contact is they wear out the pads quicker.




.
 

panhead

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I'm interested to find out why the big euro performance manufacturers still fit drilled rotors to their cars.
Because drilled rotors are okay for street driven cars and in many cases high end performance cars have cast holes and this includes cast holes in ceramic rotors.




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KING46Calais V

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Braking in the wet would be tyres as brakes can easily cope in the wet.

A lot of people confuse plain rotors and solid rotors. The VF has non slotted vented rotors on all 4 corners not solid rotors, in non heavy use these actually perform better as there is marginally more surface area for the pad.

Slotted or drilled see benefit when the pads heat up significantly and produce gas when needs to wiped by the slot to maintain good surface contact. (This problem is not as much an issue now as pad compounds are much better than in the past).
In relation to wet weather braking, I was referring to the short delay with the brakes biting after they have been through a puddle or soaked.
I never had this delay with drilled, slotted, or drilled/slotted


Yes my mistake about the rotors. I meant plain, not solid.
 
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KING46Calais V

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Because drilled rotors are okay for street driven cars and in many cases high end performance cars have cast holes and this includes cast holes in ceramic rotors.




.
Ah ha that makes sense as most high high end have ceramic rotors.
 
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