Has anyone tried these Rotordisc's

Mmmmmmmm.... just as well we all have different likes..... i would be interested to read an objective report on these, seem a little expensive to me.
 
These discs look unbelievably crap!

Also, they cannot save weight, unless the edge serrations are actually within the swept area, so don't believe the claims.

If you want a pair of discs that will get the moped teens all hot under the collar (this is the original application), then go for it, otherwise steer clear and save your cash.

Cheers,

Mike
 
I agree with Mike. (horrible)

I do however need some new discs. Mike recommended Mintex discs and pads, I can get them for around £50, which seems good value. I just wondered if anyone had any exceptionally good or bad reports on any other types. On ebay alone ther are drilled, grooved, drilled and grooved, black EBC as well as many that say OE quality but no brand. Then there are the brands stocked by GSF and Euro, oh and Audi of course.

Nick
 
Mike fitted Mintex discs/pads on my A2 last month and am very happy with them. They do not have quite the bite my previous machined discs and pads from Awesome however for the cost they are more than acceptable.
 
On previous cars I've had Mintex and Febi Bilstein. I've always been happy with both.

If this is DIY then don't forget to clean the surface of the wheel to minimise corrosion. From what I've recently read copper grease is not advised and certainly not on the wheel bolts themselves.
 
As Adrian has said, I fit Mintex and I use them myself - albeit I use 312mm rotors and TT calipers, for that little extra!!

They are brilliant, however, make sure that the entire kit is Mintex, as for £50 you're likely to get either pads or discs that are no-name items.

Cheers,

Mike
 
Mike recommended the Mintex disks and pads to me and i think they are superb. I slightly warped the previous 2 sets of OE disks i had. I think the Mintex ones are unwarpable when used on the A2.

Go for Mintex.

Black Pearl said:
I agree with Mike. (horrible)

I do however need some new discs. Mike recommended Mintex discs and pads, I can get them for around £50, which seems good value. I just wondered if anyone had any exceptionally good or bad reports on any other types. On ebay alone ther are drilled, grooved, drilled and grooved, black EBC as well as many that say OE quality but no brand. Then there are the brands stocked by GSF and Euro, oh and Audi of course.

Nick
Click to expand...
 
Skipton01 said:
These discs look unbelievably crap!

Also, they cannot save weight, unless the edge serrations are actually within the swept area, so don't believe the claims.

If you want a pair of discs that will get the moped teens all hot under the collar (this is the original application), then go for it, otherwise steer clear and save your cash.

Cheers,

Mike
Click to expand...

And indeed, if the serrations are within the swept area, then they're effectively removing large chunks of the part of the disc that has the most mechanical leverage for the braking effect - the outside of the disc.

These discs are wrong in so many ways I really can't say "stay away" enough. The cross-drilled holes are machined, not cast, so are likely to fracture, and again won't actually give you any performance benefit as modern pads don't "out-gas" (in fact they haven't since asbestos and other organic compounds were phased out from brake pads years ago). The grooves will help if you're pounding your brakes and getting problems with glazing, but there again if you're using your brakes that hard, I'd suggest getting a bigger brake setup (bigger discs, bigger calipers) with better pads in any case, as Mike has done.

Seriously, invest your money in quality known brand replacements for brakes - Brembo or Mintex would get my vote as far as discs are concerned. I'm putting new Brembo discs on tomorrow in fact.

If you want to upgrade your brakes with the existing disc size, get a decent fast road pad like the Ferodo DS (again which I'm putting on tomorrow) and put in a high boiling point fluid like ATE super blue, or other.
 
I think they would look great.................

......... mounted on the wall with a clock mechansim stuck in the middle :D


Seriously though, structurally they won't be a strong as round disc and the braking area will also be smaller, walk away..........

David
 
spike said:
The design can't be all bad news as Wilwood, a well respected supplier of performance brakes offer a similar scalloped brake rotor (disc) - http://www.wilwood.com/Start/Products/002-Rotors/007-ULS/index.asp

Cheers Spike
Click to expand...

You'll have more confident with a reputable brand name like Wilwood for sure. What they do specify on their site is 'Scalloped rotors are unsafe for street uses', but how much is that down to being in US, a lawsuit country, I don't know.

What it seems to me, reducing weight is the primary design factor (as least for the Wilwood scallops) as well as heat control. It would appear the pads do cover the curved-in area of the discs. I suspect they act more like extra grooves as far as grinding against the pads is concerned. The effective braking surface area is reduced, less braking force is available. but in return, saved unsprung weight and posibbly better heat management for racing applications.

Also suspected is better water dispertion when the pads are clamped. As a biker friend of mine said, 'these have been used on motorbikes for ages'. In Wilwood's site, they also say dirt racing application, which I guess helps to let dust, mud, grit escape between the pad and the disc.

But as far as the road going A2 is concerned, you'll probably find it hard to over heat the discs, I managed a track day under 30C sun on OE setup so these will simply give me less braking area with better heat dissipation (which I don't need) and less unsprung rotation mass (which I would like). Also, I probably won't hand over £125 to an no-reputation ebay seller for something that is a specialist product.
 
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