JCW JCW Drilled & Slotted Rotors
#27
The Ferodo pads showed up today. They have the typical backings I'm used to, just like the ones pictured a few posts back. If I'll be no worse off without them, I won't sweat it I guess. Even first party BMW pads of this design don't use those hats, so they must not be required. I wonder what purpose they serve.
--Matt
--Matt
#28
#30
Never heard back so I ordered a replacement wear sensor. I'm probably going to pick up this punch set: https://www.amazon.com/gp/aw/d/B01B3NWBVI
RacingBrake only has the one size tool (6mm), so hopefully I that set should cover a close enough size. It seems like the newer calipers might be using 4mm pins, and it should have options on either side of that.
--Matt
RacingBrake only has the one size tool (6mm), so hopefully I that set should cover a close enough size. It seems like the newer calipers might be using 4mm pins, and it should have options on either side of that.
--Matt
#31
Never heard back so I ordered a replacement wear sensor. I'm probably going to pick up this punch set: https://www.amazon.com/gp/aw/d/B01B3NWBVI
RacingBrake only has the one size tool (6mm), so hopefully I that set should cover a close enough size. It seems like the newer calipers might be using 4mm pins, and it should have options on either side of that.
--Matt
RacingBrake only has the one size tool (6mm), so hopefully I that set should cover a close enough size. It seems like the newer calipers might be using 4mm pins, and it should have options on either side of that.
--Matt
#34
What sort of squeal control solutions are you guys using? These DS2500s have a tendancy to squeal, and I'd like to minimize it .I've had good luck with the red CRC silicone stuff made for the back of pads, as well as Permatex Ceramic Extreme brake parts lube (which does double duty in that role too). I have both on hand, but have heard good stuff about the spray on CRC stuff. Never could get the EBC Yellows on my Clubman quiet with either though.
Probably will just go with the Ceramic Extreme. I've not had it burn off after getting the brakes way hot like the silicone stuff, and it seems otherwise just as effective as a squeal prevention/suppression measure.
--Matt
Probably will just go with the Ceramic Extreme. I've not had it burn off after getting the brakes way hot like the silicone stuff, and it seems otherwise just as effective as a squeal prevention/suppression measure.
--Matt
Last edited by mattkosem; 04-21-2018 at 06:03 PM.
#35
I put nothing on the backs of the pads and it ended up quiet. Rotors fit great, pads did not. They were about 1/32" too thick - basically the thickness of the backing plate. For lack of any other option, I sanded off the 1/32" and they went in otherwise perfectly. The smallest punch from that set worked great!
Quiet as a mouse and they stop wonderfully! Ferodo's bedding instructions were pretty intense, but all looks good!
--Matt
Quiet as a mouse and they stop wonderfully! Ferodo's bedding instructions were pretty intense, but all looks good!
--Matt
#37
So, I'm not sure how this compares to a new stock rotors, but the weight I see on old mousey (more on why it's mousey here) seems to be lighter than the DBA.
If you're looking for somewhere to shed some additional unsprung weight, it seems like you can look elsewhere. This scale may be way off at weights like this, and I have no idea how much has worn off of these rotors (probably not 1lb), but it's at least the same scale with both in the same spot so they should be comparable figures.
--Matt
Last edited by mattkosem; 04-22-2018 at 05:59 PM.
#38
The DS2500s are definitely nice pads on this car. They are definitely a bit bitier than the stockers, but not in a really in your face way.
They're very straight forward and simple to drive normally. I have found that they will squeak under on very specific condition, when completely cold and coming to a stop at around 5mph with a very specific pedal pressure. I cannot recreate it after any stops past the first, and it's easy to have not happen by just pressing the pedal somewhat heavier or lighter.
Very happy with them. Pedal feel is excellent, only slightly firmer than stock. Overall, aside from that squeak mentioned there, they're actually quieter than stock. The stock pads are a little "wooshy" during low speed braking, and these do not do that unless there's oxidation from rain on the rotors. They take heat like crazy for a street pad, and braking remains very consistent across temperatures. It's still a bit cool here, and I've not had an opportunity to give them a proper flogging, but I've not approached their heat limit yet (though, admittedly, the size of the rotors on these cars probably helps a lot there).
--Matt
They're very straight forward and simple to drive normally. I have found that they will squeak under on very specific condition, when completely cold and coming to a stop at around 5mph with a very specific pedal pressure. I cannot recreate it after any stops past the first, and it's easy to have not happen by just pressing the pedal somewhat heavier or lighter.
Very happy with them. Pedal feel is excellent, only slightly firmer than stock. Overall, aside from that squeak mentioned there, they're actually quieter than stock. The stock pads are a little "wooshy" during low speed braking, and these do not do that unless there's oxidation from rain on the rotors. They take heat like crazy for a street pad, and braking remains very consistent across temperatures. It's still a bit cool here, and I've not had an opportunity to give them a proper flogging, but I've not approached their heat limit yet (though, admittedly, the size of the rotors on these cars probably helps a lot there).
--Matt
#39
Iam using TAROX and they 1,5 kgs lighter than the Prokit ones
https://scontent-frt3-2.xx.fbcdn.net...f9&oe=5B5D405B
https://scontent-frt3-2.xx.fbcdn.net...f9&oe=5B5D405B
#40
Iam using TAROX and they 1,5 kgs lighter than the Prokit ones
https://scontent-frt3-2.xx.fbcdn.net...f9&oe=5B5D405B
https://scontent-frt3-2.xx.fbcdn.net...f9&oe=5B5D405B
--Matt
#41
Wasn't aware of other options in 2-piece. In any event, they look like lightweight rotors. The rings on the DBAs are definitely not lightweight, and have tons of thermal mass. It's probably not of much consequence, but I did at least pay quite a bit less than £700 for them too.
--Matt
--Matt
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