[Suave]

I was curious to hear input from the outstanding gear heads here if there is any word or your educated guess on what the new break in period will be for the M4. Now that we know the critical Dyno figures what say ye?

1- Rev limit
2- Miles to break in service
3- Speed limit

Mainly interested cause I do plan to do ED and want to plan for mileage needed before I can open her up on the Ring.

[Brosef]

you're putting the cart before the horse here.

too many unknowns and break-in is a subject with two schools of thought and little documented evidence to statistically prove one way is better than the other.

[mkoesel]

What are F10 M5 break in guidelines and break-in service mileage? Are they different from E60 M5? The answers to those will likely predict those for your questions regarding the new M3.

[Suave]

Originally Posted by mkoesel

What are F10 M5 break in guidelines and break-in service mileage? Are they different from E60 M5? The answers to those will likely predict those for your questions regarding the new M3.

Great idea! Will do

[NISFAN]

Originally Posted by mkoesel

What are F10 M5 break in guidelines and break-in service mileage? Are they different from E60 M5? The answers to those will likely predict those for your questions regarding the new M3.

Agreed, the M4 has the same rear diff as M5/M6 (1200mile diff oil change). Same DCT gearbox, so suspect break in will mirror F10/F13 M models.

[swamp2]

Pretty much /thread after post #2. But I'll still contradict that point...

Break in is as much or more about transmission, clutches, diff, axles, etc. as it is about engine. Your new M4 engine will have been taken to redline at the factory before you get it. Whatever BMWs guidelines are now or will be, they certainly do not have to be followed religiously.

[pkimM3r]

I'm taking bets on future owners complaining about their ceramic brakes squealing and needing a different pad.

[richardg]

Originally Posted by pkim1079

I'm taking bets on future owners complaining about their ceramic brakes squealing and needing a different pad.

I will be one of them lol jk. I know what I am getting into. And even with my 5-6 track days a year I still don't need them at my skill level.

[pkimM3r]

Originally Posted by richardg

I will be one of them lol jk. I know what I am getting into. And even with my 5-6 track days a year I still don't need them at my skill level.

i personally wouldn't get the ceramic brakes since it will cost a fortune to replace if antyhign happens while tracking often. I would just get a brembo bbk for that money (even less) - but stock brakes with some good pads and fluids, stainless steel lines would be good enough.

i wonder if they come with ss lines already?

[richardg]

Originally Posted by pkim1079

i personally wouldn't get the ceramic brakes since it will cost a fortune to replace if antyhign happens while tracking often. I would just get a brembo bbk for that money (even less) - but stock brakes with some good pads and fluids, stainless steel lines would be good enough.

i wonder if they come with ss lines already?

I was thinking along those lines also but for the unsprung weight and better performance at the track I think it will work out for me. I figure the chances of something happening are pretty slim and the CCdisks are 2300 a piece for the M5/6 according to realoem and they are larger. I figure if i crack one and there is a single mm difference I will just replace one. If they are worn low I buy two. That's the cost of the BBK I would have bought anyway. Plus if I can get 20 track days over 5-6 years plus the daily driving out of them I don't mind since I normally get 2-3 years and 10-15 track days out of my current brakes on my e92. I have heard everything from these disks outlasting the car to 100k for normal use. I have no idea. I have about 40k and 11 track days on my current rotors and will likely be replacing soon. I need to go measure the thickness though. I will find out soon enough

[richardg]

Oh and I am sure the normal brakes with SS lines and a good pad will be more than sufficient. I am the first to admit 50% of the decision is for the bling. What I really wish they did was offer slotted rotors. I am sure with more cars getting CCB we will see good aftermarket CCB options come for the car. Or just steel rotor replacements. One thing to keep in mind is that on the M5/6 it uses a different brake booster for CCB since it has higher friction. I remember reading that in the detailed PDF. So going to steel might make for excessively grabby or prematurely wearing rotors.

[iPhone vs Android]

I know the answer is probably no, but I thought I'd still ask what everyone else thinks. Do you think we'll need the 1200 mile break-in service with the new Ms? Also will they require the nice 10w-60 oil or the crappy 5w-30? I'm guessing since there will be no 1200 mile break-in and you can use the standard oil used in other BMWs.

[Sir Loin]

Whatever the maintenance will be, I will always change motor oil twice as frequently.

[iPhone vs Android]

Same bore and stroke as N55. It's not going to use a different oil. Therefore, I concluded it wouldn't need the 1200 mile service as N55 generally doesn't. That being said, I wanted to see what the experts think about it.

[GregW / Oregon]

Originally Posted by iPhone vs Android

Same bore and stroke as N55. It's not going to use a different oil. Therefore, I concluded it wouldn't need the 1200 mile service as N55 generally doesn't. That being said, I wanted to see what the experts think about it.

Same bore and stroke means nothing. The working stresses on almost all components are much higher. The fact this engine has a special forged crankshaft tells you something. The driving style from the average owner is expected to be more extreme. I would not be surprised to see a higher or different spec oil requirement from the N55. The cost of the exclusive oils over the ownership period is negligible, IMO, if they better protect the engine.

[mkoesel]

The initial service is not just for the engine oil. The M5/M6 require service at 1200 miles:

http://f10.m5post.com/forums/showthread.php?t=765513

Which you can see covers transmission and differential just as with past M vehicles. And, the engine oil gets changed despite similarities with N63 V8, you'll notice.

So, in conclusion, the F8x will probably have the service too.

As for oil type, it's not known yet either but the S63 does not use 10W-60. It can take 0W-30, 0w-40, 5w-30 or 5w-40. We'll see how it goes for the S55.

Originally Posted by iPhone vs Android

I know the answer is probably no, but I thought I'd still ask what everyone else thinks. Do you think we'll need the 1200 mile break-in service with the new Ms? Also will they require the nice 10w-60 oil or the crappy 5w-30? I'm guessing there will be no 1200 mile break-in and you can use the standard oil used in other BMWs.

[Money2536]

Originally Posted by iPhone vs Android

I know the answer is probably no, but I thought I'd still ask what everyone else thinks. Do you think we'll need the 1200 mile break-in service with the new Ms? Also will they require the nice 10w-60 oil or the crappy 5w-30? I'm guessing since there will be no 1200 mile break-in and you can use the standard oil used in other BMWs.

What is crappy about 5w-30? Who wants to have to go direct to BMW to buy special 10w-60 TWS? I would love it if the new engine required a readily available oil.

[Needsdecaf]

Originally Posted by Money2536

What is crappy about 5w-30? Who wants to have to go direct to BMW to buy special 10w-60 TWS? I would love it if the new engine required a readily available oil.

Exactly. NOthing crappy about 5W-30 at all. It's just a viscosity rating. Just because it's common doesn't mean it's crappy.

My PCar diesel takes 5W-30, but it takes a special diesel forumlation designed not to foul the particulate filter or urea injection system. And let me tell you, it's not cheap. Even M1, in bulk, is $8 / quart. If I bought Porsche oil it would be double.

[moorfan]

My order sheet in the dealer computer system specified a 10,000 mile/12 mo oil change interval.

[JoeFromPA]

It's too early to know. 10w60....whatever, there's no reason for that spec today. It's just more of a tradition and partnership than anything else. It's not like Porsche spec's 10w60 in their track or turbo vehicles, or any of the other major hard charging manufacturers who build reliable NA and FI engines.

But 10w60 is more a reflection of piston and ring design as well as crank forces.

....

In terms of the 1200 mile service, probably will stay around.

[GregW / Oregon]

Originally Posted by Needsdecaf

Exactly. NOthing crappy about 5W-30 at all. It's just a viscosity rating. Just because it's common doesn't mean it's crappy.

And you can be sure BMW will spec the lowest viscosity they can, as it can have an effect on fuel economy.

[Sedan_Clan]

Originally Posted by Mr Sparkle

it's not cheap indeed, that's b/c in each bottle, there's a pint of diced lion hearts, and a pinch of ground unicorn horns.

...Don't forget the seminal fluid from a Tatooine druid.