07-11-2010, 05:00 AM | #1 |
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Brakes: 135i vs 1series M coupè
So it looks like the M will be getting the brakes from the M3.
Just a quick question: are they better? Speaking from use on a track.
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07-11-2010, 05:27 AM | #2 |
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Yes, they're better. For example, have a look at this German comparison between two tuner 135's (with the OEM brakes) and an M3: http://www.evotechschweiz.ch/files/p...1_M3vs135i.pdf
Best regards, south
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07-11-2010, 10:03 AM | #4 |
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Gerne.
Best regards, south
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07-11-2010, 10:59 AM | #5 |
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Since I don't speak German, could you please share the conclusions about the 2 brake systems?
My personal opinion is that the 135i calipers are better, but the M3 rotors are larger and can dissipate more heat. I think the 6-piston calipers from the 135i combined with larger rotors (M3's or others) would be best. I also hope BMW recalibrates the servo assist - the 135i brakes are way overboosted and makes modulation very difficult. They should benchmark Porsche on this aspect of performance.
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07-11-2010, 11:25 AM | #6 | |
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Breaking distance at 100 km/h is identical between the M3 and the Schnitzer with warm brakes, at 200 km/h the difference is a bit more than 3 meters (in favor of the M3) |
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07-11-2010, 11:38 AM | #8 | ||||
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Quote:
Some quotes: Quote:
Quote:
Quote:
Best regards, south
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07-11-2010, 02:24 PM | #11 | |
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Quote:
ianc
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"I got 328 loaner and was impressed with performance. It feels much faster than my 135i." - MOCKBA |
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07-27-2010, 12:35 AM | #12 | |
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The M3 brakes might work better in a lighter car, but let's hope for the M3 rotors and 135i calipers/pad shape. BTW, if you look at how puny the M3 pads are, you'll understand their weak point immediately - the 135i pads are *huge* in comparison.
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07-27-2010, 12:42 AM | #13 |
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yes, the drilled rotors are the supreme factor in the brake changes. they stock brakes are very strong in the beginning but heat is the reason for the "soft" feeling later on in track use.
So the drilled breaks are better in cooling down. Also, you could create a custom brake cooling duct with some elbow grease. downside is sometimes the rotors aren't drilled all the way though (not sure on m3), so when they wear down you can't flip them over.
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07-27-2010, 05:51 AM | #15 |
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Simple mods! Install stainless lines theirs 6 of them. Castrol SRF or equivalent and a set of Pagid RS 19 or endless pads. Endless pads are $$$$$ but the manthey porsche won the 2008 and 2009 nurburgring 24hr race using the original discs and pads from the start of the race amazing
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07-27-2010, 07:37 AM | #16 | |
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Or perhaps BMW could supply us some decent brakes instead.
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07-27-2010, 07:51 AM | #17 | |
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The reasons for the soft feel after hard track use are others: - completely inadequate brake pad material - marginally insufficient heat transfer capacity (this could be a combination of insufficient cooling flow and/or system sizing) Someone mentioned Endless pads - any aftermarket pads you put on will work well on some tracks and not so well on others (due to the second reason above). Nurburgring is not as hard on brakes as some of the other, shorter tracks (not sure if this is an issue with US-designed tracks or if it's true in Europe as well). So throwing $800 or $1000 or however much they cost on a set of pads that may or may not give you satisfaction is a risk. What it actually takes is for the manufacturer to design the brakes and size them appropriately for track use given the mass & speed of the car. Porsche does this in many of their models. Then it truly becomes a case of swapping for track pads and not having the slightest worry.
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07-27-2010, 08:03 AM | #18 |
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I did say for anybody serious about tracking.... personally if I buy a 1M I will invest in AP racing from the start...
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07-27-2010, 09:47 AM | #19 | |
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07-27-2010, 09:59 AM | #20 |
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or you can get the bmw performance rotors and keep our stock calipers and have the best of both worlds...
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07-27-2010, 10:18 AM | #21 |
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Let's be honest here... what percentage of M3s do you think actually hit a track? It isn't until the car is 10 years old and becoming an inexpensive dedicated track toy that these things will matter. I bet 90% of them will never see a track in their lifetime.
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07-27-2010, 02:40 PM | #22 | |
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Just like Porsche offers brake upgrades on their cars (even when the cars don't really need them). BMW is missing out on opportunities to relive their customers of serious chunks of cash...
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