01-08-2018, 04:31 PM | #45 |
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I'd go ST or AP/Essex/PFC over Sparta/Brembo. Sparta/Brembo use the same pad but you're limited to a pad no thicker than 18.5mm, but most are 16.5mm.
ST standard is 18mm and you can fit up to 20mm on the F8X and still have room for 1mm ti shims. Downside to ST kits are they are still street biased (even the trophy). You can and at COTA will burn up the dust boots even with shims. The AP/Essex/PFC kits are more track biased. up to 25mm pad thickness and the pad shape is old and ubiquitous so it's a good value given how much thicker they are. AP/Esses don't have dust boots so no dust boots to burn up. Not seen a PFC caliper on a F8X in person but on the E92 the Calipers are massive. Probably to accommodate the large pads. A BBK cost wise no matter which you choose will have a lower operational cost than OEM. The ST friction rings are about the same if not lower priced than the OEM's. Solid discs will last a long time. If 8-10 track days total is all you're planning you'll likely not even need to replace them. Track pads for any of the race calipers will be less than or equal to what you'll spend for the baby 16.5mm OEM sized track pads. You won't have to worry about your calipers turning green. Though you can still discolor ST's painted calipers. If I were buying new now I'd get AP/Essex. Brake cooling highly recommended and solid/slotted only rotors a must. |
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01-08-2018, 04:39 PM | #46 | |
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Thanks for the post. I'm sold on the Essex kit and actually started toying with the idea of buying a nice used M4 and prep it as a dedicated track car. If so, then the brakes might stay with me longer than I keep the M3 and it would be great to just be able to swap them over without any regrets. |
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01-08-2018, 04:47 PM | #47 |
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01-08-2018, 10:43 PM | #49 |
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There is a list of compatible pads on their website as well.
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01-21-2018, 07:07 PM | #50 |
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BBK should be the first thing you purchase if you plan on doing track days, the second is a good suspension! These cars make enough powder but stopping and turning is where it's at!
Then I'd do a set of rims and good track tires I also run Apex 18" and Nittos. |
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01-21-2018, 07:53 PM | #52 |
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There's a decent amount of your front rotor face not being used. ST, or other pad manufacturers, doesn't offer a pad with a larger radial depth for the ST60 caliper so all of the rotor is used? Using all of the rotor face with a larger pad will decrease pad wear, increase the area to transfer kinetic energy to thermal energy, and decrease rotor temps. I'm just surprised to see this much of the rotor not being used - why does ST offer such a large rotor ring if they had no plans to offer a pad to use the increased rotor radial depth?
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01-23-2018, 10:38 AM | #53 |
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01-23-2018, 10:44 AM | #54 | |
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Because the power delivery is so hard coming out of corners is my weakness but high speed and braking is where I'm most comfortable. |
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01-23-2018, 12:37 PM | #55 |
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01-23-2018, 07:30 PM | #56 |
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01-23-2018, 07:36 PM | #57 | |
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01-23-2018, 07:54 PM | #58 | |
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01-23-2018, 08:06 PM | #59 |
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Quick update, I ended up buying the Essex/AP Racing kit from Harold at HP Autosport(Thanks for the great deal!) and installed it on Saturday. Some things came up and I didn't get a chance to drive it until yesterday but I bedded the trackpads (Ferodo DSUnos) and dropped it at the dealership for the 1200 mile service. I will be taking it down to COTA this weekend to break in the car and brakes on track. I also run the Apex EC-7 Staggered wheel setup with Nitto NT01s. I'll take some pictures when its all setup for track duty on Thursday or Friday.
I'm planning on writing up some notes on the install and uploading more pictures, but here are a few teasers. |
01-24-2018, 12:23 AM | #60 | |
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01-24-2018, 08:37 AM | #61 |
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For those running the calipers without dust boots on street cars are you doing more frequent rebuilds? I've always assumed this was a no fly zone for a street car but might be based on where you live too (e.g. No road salt locations)
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01-24-2018, 08:48 AM | #62 |
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No comment on the essex setup obviously, but my stock calipers on my 2016 M3 dried up after one or two track events and basically crumbled off. Basically, I drove around about a year without them and never noticed anything. As you mention, we don't typically have issues with road salt in TX so that could be the difference.
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01-24-2018, 03:14 PM | #63 |
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The primary issue you need to be aware of is pressing dirty pistons back into the caliper. You’ll minimize the chances of causing damage to internal seals if you make sure the exposed piston surfaces are clean when you go to push the pistons back in.
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01-31-2018, 10:13 PM | #64 | |
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01-31-2018, 10:18 PM | #65 |
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Thank you.
I bought the stud kit from Apex Racing. They have the best prices I could find for a full set and they matched the best price I could find on ground control camber plates. https://www.apexraceparts.com/accessories/apex-75mm-m14-bmw-5-lug-hex-head-stud-kit-black.html |
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02-05-2018, 10:39 PM | #66 |
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Some advise to anyone on this thread regarding caliper paint discoloration.
It happens. The more advanced driver you are/become along with the type of tracks you run at all will determine the amount of time it takes to discolor the calipers. BBK's will help pull heat away from the calipers but even using dedicated brake cooling backing plates your going to eventually destroy the paint. I've run on 2 different BBK kits along with 2 sets of OEM Brembo setups. All on other platforms) They all faded and turned grayish.... Your best bet is black...it will hide the fading longer than any other color but it will also go eventually. Deal with it.....
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