Brake Change?

Phil W

Phil W

Phil W

Soldato
Joined
19 Oct 2002
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Not upgrade as such, but change for drilled/grooved.

The Sport needs the brakes changing, so i'm doing the whole lot (front and rear), but is it worth paying an extra £20 or so for some holes and grooves?

They are 256mm fronts and what ever the rear disks are! Before anyone asks, i'm not really too concerned about them looking "cool", do they offer any performance upgrade?

Many thanks,

Phil
 
mine are drilled but were like that when i got it. basically i cant get them to fade, but mine are 288mm.

the opinion of track users are that grooves are more effective, but so many big car makers stick drilled on there, so they cant be that bad
 
I think cheaper drilled discs can crack under extreme use, but a decent set of Brembo MAXX grooved discs will not only look the stuff, but increase braking performance.

cymatty has some on his Saxo, and they're pretty awesome.
 
I'd always understood grooved to be slightly better than drilled as they are less likely to crack under pressure, so to speak, but I guess get a good quality set of either and you should be ok.
I personally, have never heard any horror stories about either sort.
 
Cheap drilled disks are just that, drilled, and this can lead to stress raisers in the disk. Generally not a problem on the road but can be an issue on the track. The 'drilled' disks used by the likes of Porsche etc are cast during the manufacturing process and so don't have these issues.

Places such as Godspeed actually recommend that people don't use the drilled disks if the car is to see extreme use but to go with either the plain or grooved options. They are sold because people want them mainly for posing purposes.
 
I have drilled and grooved tarox ones on my current car, they are no better than standard and look really scabby after only 8k miles of use. Used to have some brembo max discs on my old one and got them still in the garage for this one and they are better quality but don't think you will notice much of a difference in braking performance. Spend that extra £20 on some Mintex 1144 pads over standards.

Basically drilled and grooved might make a slight difference on a 12pot braking system on car doing 200mph but not on standard calipers. Diameter of disc, caliper design and pad compound is what will make a difference on a road car.
 
Paul, drilled and grooved discs won't make the car stop any faster.

What they will do, is help the disc stay cooler for longer, thus preventing brake fade.
 
agw_01 said:
Paul, drilled and grooved discs won't make the car stop any faster.

What they will do, is help the disc stay cooler for longer, thus preventing brake fade.
Click to expand...

I know.

I meant braking performance as in resilience to fade not physical stopping distance. Drilled and grooved discs don't make sod all difference with small stock standard calipers and pads. I can make mine fade with "tarox performance pads and discs" just as easy as I could with completely stock motorfactor parts. Not managed to get fade with mintex 1144s however they aren't as good as stock pads when completely cold.
 
Good quality plain or grooved discs and some decent pads (Ferodo DS2500's are awesome) will be a good fast road setup and will handle some track day use. Stay away from the drilled discs for the reasons already mentioned. I use AP6 pots, 335mm grooved discs and Ferodo DS2500's. I can stop from 100mph on a dry road in 2.8secs :D
 
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