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      04-06-2014, 04:10 AM   #1
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435i M Sport, F32, 1st gear shifts at 6500rpm

Hi Guys,

Just purchased an M sport 435i and noticed that first gear always shifts at 6500 rpm (whether in comfort, sport or sport + mode, and whether in auto or manual shift mode) and then 7000rpm for the rest of the gears. Anyone know why that is?

Thanks.
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      04-06-2014, 07:32 AM   #2
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Quote:
Originally Posted by rhaddad View Post
Hi Guys,

Just purchased an M sport 435i and noticed that first gear always shifts at 6500 rpm (whether in comfort, sport or sport + mode, and whether in auto or manual shift mode) and then 7000rpm for the rest of the gears. Anyone know why that is?

Thanks.

Unless you are flooring it in Sport+ all the time, I say take it in to the dealership as soon as possible. Before you blow your engine. This is very abnormal behavior. Are you sure ... ALWAYS shifts at 6,500 and 7,000 RPM?
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      04-06-2014, 07:43 AM   #3
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Not always, only if I'm pushing it to redline, 1st gear doesn't reach 7000 rpm redline, always upshifts at 6500 rpm. Looks like they all do that, just found this YouTube video, car does the same thing, shifts at 6500rpm in first gear then 7000 the other gears:

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      04-06-2014, 08:51 AM   #4
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Normal behaviour for seemingly all high performance autos. Due to WOT in 1st gear being rapid acceleration both in terms of vehicle velocity and engine speed, it will shift slightly short of the redline to protect itself from the resulting inertia that may over-rev and damage the engine.
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      04-06-2014, 09:01 AM   #5
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How many miles on the car?
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      04-06-2014, 10:04 AM   #6
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Thing is the engine is losing power going all the way to red line. Manually shift at 5900/6000 in WOT
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      04-06-2014, 11:33 AM   #7
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New 435i F32? Remind me to never buy a car from you. Always pushing it to redline on a new engine. Gulp. I'm following BMW's recommended break-in procedure with our new 335i.
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      04-06-2014, 12:41 PM   #8
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Quote:
Originally Posted by diablo2112 View Post
New 435i F32? Remind me to never buy a car from you. Always pushing it to redline on a new engine. Gulp. I'm following BMW's recommended break-in procedure with our new 335i.
LOL.

Pat yourself on the back. Manufacturer's break-in guidelines are as meaningless as it gets.
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      04-06-2014, 12:45 PM   #9
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See if it hits 7000rpm in reverse...
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      04-06-2014, 12:45 PM   #10
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The reason is that in 1st and 2nd gear power and torque are slightly limited
In M you can go against the rev-limitator, over 7.000rpm, even in 1st gear, but after 6.500rpm the car sit down
That's why in DS it changes 1-2 at 6.500, 2-3 at 6.700/6.800, and the following gear changes at 7.000
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      04-06-2014, 12:47 PM   #11
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Quote:
Originally Posted by Alpine435i View Post
LOL.

Pat yourself on the back. Manufacturer's break-in guidelines are as meaningless as it gets.
IMHO, this is absolutely false, but you are free to believe it' s a good thing to floor just out of the BMW dealer

Last edited by Gio72; 04-06-2014 at 12:55 PM..
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      04-06-2014, 12:52 PM   #12
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Originally Posted by BEAR-AvHistory View Post
Thing is the engine is losing power going all the way to red line. Manually shift at 5900/6000 in WOT
Sorry guys, that's sounds strange to me, because N55 it's really "alive" at high revs, quite different from my old N54 (tuned...)! It gives the best in 5000/7000 rpm for me, expecially with MPPK: as a matter of fact, the manifacturer claims 335hp costant in the range 5.800-6.500rpm
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      04-06-2014, 12:57 PM   #13
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Quote:
Originally Posted by rhaddad View Post
Not always, only if I'm pushing it to redline, 1st gear doesn't reach 7000 rpm redline, always upshifts at 6500 rpm. Looks like they all do that, just found this YouTube video, car does the same thing, shifts at 6500rpm in first gear then 7000 the other gears:

As I've written before, don't worry, it is absolutely normal
But it would have been better to respect the break-in period for me
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      04-06-2014, 01:04 PM   #14
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Quote:
Originally Posted by Alpine435i View Post
LOL.

Pat yourself on the back. Manufacturer's break-in guidelines are as meaningless as it gets.
I take it from your join date on the forum this is your first BMW. Congrats. I've owned many, over a dozen from new. Put 100k+ on a car, and you learn a few things. Among them, manufacturers break-in is very important to bed in the seals, especially the piston rings. Avoids compression issues later in life, and the need to service the bottom end. Also really helps to seat the valves, helping with performance. There's a reason cars gain a few HP as you break them in. Valves are seating better and less parasitic friction losses throughout the drivetrain. Tear down a few engines, you'll learn...

None-the-less, believe what you want.

Last edited by diablo2112; 04-06-2014 at 01:22 PM..
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      04-06-2014, 01:29 PM   #15
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Quote:
Originally Posted by diablo2112 View Post
I take it from your join date on the forum this is your first BMW. Congrats. I've owned many, over a dozen from new. Put 100k+ on a car, and you learn a few things. Among them, manufacturers break-in is very important to bed in the seals, especially the piston rings. Tear down a few engines, you'll learn...

None-the-less, believe what you want.

+94,817. Especially German cars. And specifically BMW and ///M engines. If you ignore the break in recommendations, you are more likely run into "issues" down the road. Of course if you are leasing and plan on just returning the car at 30 or 40k miles, you are not likely to run into any of said issues at all.


Btw, I think the poster Alpine435i is an older member here. Used to go by the name f32. I do not believe he is as new as his join date suggests. Correct me if I'm wrong.
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      04-06-2014, 01:31 PM   #16
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Quote:
Originally Posted by Customize81 View Post
See if it hits 7000rpm in reverse...

Lol. Would love to see that too. Do it. Do it. Do it.
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      04-06-2014, 03:36 PM   #17
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Thanks for the responses everyone, definitely respect the break in period, car has 4500kms on it, I've given it plenty of time to break in. Just thought it was really strange, this is my 4th BMW and never seen this before, my previous car was a Z4 35i and it didn't do it, possibly a difference between the N54 and N55 engines
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      04-06-2014, 04:16 PM   #18
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Quote:
Originally Posted by rhaddad View Post
Thanks for the responses everyone, definitely respect the break in period, car has 4500kms on it, I've given it plenty of time to break in. Just thought it was really strange, this is my 4th BMW and never seen this before, my previous car was a Z4 35i and it didn't do it, possibly a difference between the N54 and N55 engines
Somebody told me (but I forgot to check it out directly on my control display) that during acceleration in 1st and 2nd gear you can see in the "Sport displays" that power (and torque I guess) is limited.
Check it
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      04-06-2014, 04:21 PM   #19
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Quote:
Originally Posted by Gio72 View Post
Somebody told me (but I forgot to check it out directly on my control display) that during acceleration in 1st and 2nd gear you can see in the "Sport displays" that power (and torque I guess) is limited.
Check it
Curious ... Does your MPE sound any better as of late, since it's had more time to break in?
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      04-06-2014, 04:32 PM   #20
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Quote:
Originally Posted by Gio72
Quote:
Originally Posted by rhaddad View Post
Thanks for the responses everyone, definitely respect the break in period, car has 4500kms on it, I've given it plenty of time to break in. Just thought it was really strange, this is my 4th BMW and never seen this before, my previous car was a Z4 35i and it didn't do it, possibly a difference between the N54 and N55 engines
Somebody told me (but I forgot to check it out directly on my control display) that during acceleration in 1st and 2nd gear you can see in the "Sport displays" that power (and torque I guess) is limited.
Check it
I have checked that already and the gauge shows full power from first gear. It's deceiving though as the power (kw) on the sports display reads 240kw yet the car only has 225kw so you could understand how one would assume it could be limited as the needle doesn't go to maximum as the car doesn't have 240kw.
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      04-07-2014, 08:41 PM   #21
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Go ahead--stomp a mudhole in it brand new! Doesn't matter, BMW is just trying to delay your gratification!
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      04-07-2014, 10:20 PM   #22
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Quote:
Originally Posted by rhaddad View Post
Hi Guys,

Just purchased an M sport 435i and noticed that first gear always shifts at 6500 rpm (whether in comfort, sport or sport + mode, and whether in auto or manual shift mode) and then 7000rpm for the rest of the gears. Anyone know why that is?

Thanks.
Wait, so when you manually shift to second gear, it says in first gear until you get to 6500rpm? That makes no sense.

If not, if you're doing this at WOT, that's normal.
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