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07-20-2012, 08:47 PM | #1 |
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2012 BMW M3 stock calipers - how many pistons?
I cant find anywhere in any specs where it says how many pistons there are on the front and rear brakes of a 2012 BMW M3 competition. Anyone know?
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07-20-2012, 08:49 PM | #3 |
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Believe all (4) are single piston calipers.
Thought that was a little odd on a "performance" brake but...
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07-20-2012, 09:07 PM | #6 |
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They work pretty well in reality.
BMW held onto the single piston cost-savings strategy as long as they could, but the brake wars finally caused them to cave. I would expect most M cars from this day forward to feature mutli-piston calipers and proprietary M rotors.
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07-20-2012, 09:07 PM | #7 |
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The brakes are extremely good for their intended purpose. They will only start to feel inadequate at the track assuming it's not your first or second time.
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07-20-2012, 09:41 PM | #8 |
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^ Agreed and if you moderately track, a good set of pads with appropriate brake fluid on stock brakes does wonders.
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07-20-2012, 10:10 PM | #9 |
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hi troll!
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07-21-2012, 06:12 AM | #10 |
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When BMW made the 1M, they ditched the 6 piston front calipers from the 135i and replaced them with the big single psiton sliders from the M3. Interesting.
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07-21-2012, 09:50 AM | #11 |
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One piston. It's actually comparable to the 63's 6 piston set up 60-0 stop time if i remember reading correctly.
BMW better step it up though, people spending 80k on an M3 want it to look the part. No denying those AMG's are sexy with those huge calipers.. |
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07-21-2012, 09:58 AM | #12 |
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as others have said, calipers look sexy, but it's not neccessary as most buyer won't go to the track. Regardless of type of calipers, you need better fluid and pads for track duty for either types.
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07-21-2012, 11:43 AM | #13 |
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07-21-2012, 12:30 PM | #14 |
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Probably upgraded lines too...
Of course I wouldn't be upset if BMW somehow decided to use the Brembo 8-pots like Audi does on the R8 and RS models here either. Whether or not they are needed on the M3 can be debated however they are probably lighter and certainly look the part =)
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07-21-2012, 01:07 PM | #15 |
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Agreed 100%! This is one of my biggest gripes about the M3. The multi-piston monoblock calipers look soooo much better. A lot of less expensive have them now too... like the 135i.
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07-21-2012, 01:55 PM | #16 |
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+1
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07-21-2012, 02:23 PM | #17 |
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IMO, the rotors are just as if not more important. The floating rotor is an excellent design which is durable and relatively inexpensive to replace. The OEM brakes work well...even the pads. Just can't withstand a long session of abuse.
Honestly, I'm glad BMW went with the sliders. Have you seen how much MB charges for their "proprietary" rotor from Brembo? Ok...so you'll get one from Brembo? You can't. A GTR owner was kind of smarting after their $5k brake job. AMGs aren't that far off in terms of cost.
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07-21-2012, 02:46 PM | #18 |
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Yep can get new front rotors for 600 and rears for 500 and with pagids and castrol srf and challenge lines my stocks work very well at the track.
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07-21-2012, 03:00 PM | #19 | |
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I will admit I am nowhere near as confident in the OEM brakes as I am in the Stoptechs on my 330. As I've said elsewhere, for people who track frequently, I think Stoptechs will save you money over the long-term.
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07-21-2012, 03:18 PM | #20 |
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A well designed, single piston sliding caliper, can be just as good as a multi-piston fixed caliper. The brake components on our M cars are well matched for feel and their intended purposes. Technically, the front sliding caliper is a monoblock. It is also made out of aluminium and not iron.
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07-21-2012, 04:09 PM | #21 | |
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Quote:
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07-21-2012, 05:11 PM | #22 | |
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On my E46, I would get 3-4 weekends on front pads with my wilwood/UUC kit...probably a small upgrade from the sliders. With the stoptechs...just finished my 8th weekend on the front pads. They are the same PF01s that are changed out when on the street. Rotors have run out about .35...still have about 50% life left in the rotors. From a cost perspective, I think the ST40/4 wheel kit will cut costs since the pad costs are not MUCH different. The ST60 pads are much more expensive...not sure how much longer they will last. I just bought a used ST BBK...I'll post the results on how long the pads/rotors last.
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