View Poll Results: M-Sport Brakes, Yes or No | |||
Yes | 37 | 45.68% | |
No | 44 | 54.32% | |
Voters: 81. You may not vote on this poll |
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05-08-2012, 03:18 PM | #67 |
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E90Fleet missed that you were comparing M Sport to M Performance, not the standard Sport/Luxury/Modern/No Line brakes, your point was correct, the only difference for non US cars between M Sport and M Performance is the slotted and drilled rotors.
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05-08-2012, 03:23 PM | #68 |
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Just ordered. Being installed Monday.
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05-08-2012, 03:28 PM | #69 |
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Sorry, read to fast, thought you meant M Sport Against standard
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05-08-2012, 03:48 PM | #70 |
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Is a BMW dealer installing it ?
The car needs to be coded for the new larger brakes
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05-09-2012, 12:37 AM | #72 | |
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I also get squeaks at times, and have read many BMW owners complain that it's "embarrassing". I don't get that. I would rather the brakes work better than to get rid of noise and dust. There are pads that make less noise and have nearly no dust, but often they require more heat to work their best. I understand what you're saying, but I really hope that BMW didn't go too far to appease the non performance BMW owner. From what I can see, some tests with lack luster braking distance are more about tires than anything else. I think some test models may have even had "low rolling resistance" tires, and those types are about mileage and longevity, not about best performance. After I get my 3, a new set of non RFT's will go on in late October, early November, and stay on there for 3 years. |
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05-09-2012, 12:42 AM | #73 | |
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Plus, what is the weight of the larger setup? If they weight more, then unsprung weight goes up, and that negatively affects a cars performance from acceleration, to handling, to braking, to MPG. Larger rotors have a larger potential swept area if the pads are made to take advantage, which I have no reason to think they won't. But, I'd like to see the OEM brake spec on swept area vs the Msport brakes. And, it would interesting to see the swept area spec between US/N.America and the Euro market. |
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05-09-2012, 02:19 AM | #74 | |
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In terms of US vs Euro spec pads... This isn't a phenomenon of the F30 or just BMW. I believe every automaker has a different pad specs for US vs Europe. The same can be said with suspension tuning with some vehicles (bushings, shocks, spring selection). I remember going back and forth with a product manager for the Fiat 500 several years ago when they brought a modified early Euro-spec to test in the US market and I was saying the suspension was too soft and he said they thought US owners wanted it (as his translator ended up saying) "cushy." |
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05-09-2012, 09:27 AM | #75 |
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Yes. Dealer install.
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05-09-2012, 11:55 AM | #76 |
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05-09-2012, 12:02 PM | #77 |
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That's wht I worry abt cos the standard setup has 330mm discs whereas the M-sport has 370mm, not to mention bigger calipers.
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05-09-2012, 01:31 PM | #78 | ||
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Negatively affecting acceleration, handling, braking, MPG. YES to all (with the exception of braking). It's a very slight trade off. In life there is no everything gets better without a trade off. MPG, acceleration... most people would lose more MPG and acceleration from having the weight of all the personal items kept in a car than these brakes. Are you willing to give up a .1 second or .1mpg or km/L for better braking? In terms of handling of added weight of the heavier rotors. Having driven carbon rotors vs. steel rotors back to back on identical cars, the biggest thing you will notice is that the steering feels lighter. Heck, since most people complain about the light steering in the F30... the added weight of the larger rotors would probably be welcomed. Yes, I understand the physics behind putting more unsprung weight and the impact in lateral Gs... but seriously how many people here are approaching max Gs cornering. In terms of braking, I'm willing to bet that these work better than the 328i setup. The caliper design, the pad, and the larger surface area all lead me to believe that these will be a vast improvement over the 328i. But this is where testing can prove you wrong. I'm waiting to see what these do in real world application. Everything right now (by everyone here) is speculation. Now for your question about weight... the rotors are going to be much heavier. 25% thicker rotors in addition to the diameter. Considering they're probably made of the same steel... you have your answer. You could argue that they're cross drilled, but the holes would maybe negate the larger size rotors. Thus it's still about 25% larger. The caliper will probably be close to equal weight or negligible dues to the fact that the performance calipers are made of a different material. All this is really academic. Just go and drive the car. |
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05-09-2012, 01:37 PM | #79 | |
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05-09-2012, 02:13 PM | #80 | |
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Until we see what rotor they ship with the kit, it' all speculation. But I will admit, I was wrong. I took a second look at some of the photos again and the specs, and the rotors they're using are the aluminum hat with iron rotors similar to the Z4 3.5is. So, if they come with those rotors they will be around 3 lbs lighter. Can't wait to see and test a production kit in person. |
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05-09-2012, 02:19 PM | #81 |
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Pricing for installation is listed on bmwusa website its a standard charge something like five hundred
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05-14-2012, 09:23 AM | #82 |
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Will have post installation photo up shortly.
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05-14-2012, 09:31 AM | #83 | |
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Here as well. No problems with the brakes, just somtimes some squeaks. Never had that on my BMWs with stock/oem brakes. |
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