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11-23-2009, 08:24 PM | #1 |
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Anyone tried Cobalt Pads?
Just curious if anyone has used them. Specifically their CSR pads. I have heard good things about them. Just curious if anyone has experience with an M3?
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11-23-2009, 08:33 PM | #2 |
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I have the XR1s on my E30 M3. They work well on that car. The brand has a good reputation for performance/quality, but it is not well known. It would be interesting to see how they do on the E92 M3. I think the CSRs might be too light for track duty on a heavy car. I'd call them and ask.
http://www.cobaltfriction.com/compounds/
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11-23-2009, 08:49 PM | #3 |
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I think the XR1s are a better choice if you have the luxury of swaping pads before a track day for sure.
I no longer have a dedicated track car as the days of our local track are numbers so the M will be pulling double duty. |
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11-24-2009, 10:22 AM | #4 |
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Cobalt is a very high end and expensive pad - apparently NASCAR uses them?! I used them on my z06, and they were a bit aggressive for me because they required a lot of heat before gripping, and on the street they were noisy and useless because they would never heat up and grip. It took me a couple miles on track to get them up to temp. If you change pads at the track, they are a good choice, but I never had time to do that.. I am not sure what compound I had, unfortunately, but xr1 does sound familiar.
BTW, I am a huge Carbotech fan, ( http://www.ctbrakes.com/pads/bmw.html ) The xp10 pads are great for HPDE. I've been through about 5 sets of them and they were perfect and you can wear them right down to the plate so you get full life out of them. They are also very easy on rotors and the brake dust is ceramic-based so its much easier to clean off and will not pit/rust. BTW, just want to add that I always go back to street pads off-track, but normally change to race pads the day before going, so I do end up driving a little on the street with race pads. No proper race pad will work on the street!
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11-24-2009, 10:35 AM | #5 |
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We use cobalt pads on our Championship winning Time Attack cars for the past 3 years. Ive had nothing but great results with them on track, but they are not for street cars, not even the GTS pad. We typically get very good wear out of them as well which helps our race budget a bit too. If you have any questions or need any pad spec recomendations feel free to shoot me a PM.
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11-24-2009, 10:48 AM | #6 |
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I noticed that on my E30 M3, but was thinking it had more to do with the car being light weight and low powered (and I haven't gone through too many pads on that car since I recently got it, so I don't have a good basis for comparison in terms of wear). They have held up impressively well. Good to hear that is the case with higher powered cars as well. Someone should try them with the E92.
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11-24-2009, 10:49 AM | #7 | |
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I like carbotech as well, and have used them in the past, but want something a bit more street friendly. The car sees about 50/50 street to track time, but sounds like Cobalt may not have anything that fits this either. |
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11-24-2009, 10:52 AM | #8 |
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FYI: They state in their website that that even the CSR compound is not meant for street use.
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11-24-2009, 10:54 AM | #9 | |
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I saw that but the operating temp starts at 50F which seems like a street pad to me. I may end up with a stoptech BBK with their new pads then. Kingleh seems to think they are up for dual duty, I just wanted to try and keep the stock system for cost, and to fit under my stock 18s. |
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11-24-2009, 10:58 AM | #10 |
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I'll disagree with Subw00er on the low temp grip issue. IMO, grip is not a problem. You can still lock the wheels as you drive out of your parking lot without an extreme pedal input. In my experience with using aggressive track pads on the street, their modulation characteristics change with temperature, and that is not all that desirable for the street. There might be exceptions to this where some race pads might not provide much CoF at all in cold temperatures to the extent that becomes problematic, but I haven't ran into that scenario yet.
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11-24-2009, 02:02 PM | #11 |
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Ya Lucid, but you cant deny that the braking force is less, who wants to go around using twice the brake pedal for normal stops, and I would bet that a street pad will stop faster than a track pad in a panic stop - on a normally cold pad out on the street. IMO track pads on the street is scary and stupid for continued use.
To the OP, I dont think you'd going ot find a do it all pad. Its physics.
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11-24-2009, 02:35 PM | #12 | |
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11-24-2009, 02:38 PM | #13 | |
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about 3 years ago or so, they had a GTS compound that was still ok on the street, but has been since changed in its makeup, and street driving them is not recomended. |
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11-24-2009, 04:10 PM | #14 |
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I completely understand that their has to be compromise. I won't be able to get an all out track pad that is great for street driving but I am willing to compromise the end of both spectrums to be able to take the M3 to the track.
The challenge is that with the amount of days I do at the track I would be changing pads twice a week in the summer if I have track only pads! |
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11-24-2009, 04:22 PM | #15 | |
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I drove around with XP12 and RS19 in this car last year for some time. Never felt like I had to exert twice the pressure on the pedal. As long as you have the ability to get ABS involved, there is no reason to think street pads will make it stop faster as that proves tire traction is the limiting factor. There is plenty of friction with common track pads even at low temperatures. Again, there might be exceptions to this though. Check out the CoF vs T graphs for the Pagid pads at rennstore: http://rennstore.com/ Their more aggressive compounds have higher CoF across the board (I think 4-2-1 is the street pad). OK, the data start at 100C, but I don't see things dropping off the face of the earth from where they are because of another 60C. I can say that track pads are hard to modulate when cold though, and I wouldn't want to drive around with them for that reason. Actually, RS19 is surprisingly usable. XP12 was pretty binary.
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