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      06-13-2019, 12:25 PM   #1
AddyDaddy
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Top speed M550?

So got Dinan tune yesterday,
Still testing it and loving it.

Today on a closed course, I slammed it in sport mode and at while accelerating it stopped at 129mph at redline just like my M5 would stop at speed limiter. I didn't get to re try because I let off and slowed down. But was very strange, hard pull and stopped at redline 5th or 6th gear like I had it in manual and didn't shift, but it was in auto. Any ideas?
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      06-13-2019, 12:37 PM   #2
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Did your car come from factory with Non run flat summer tires? If not, then it doesnt have increased speed limiter. AFAIK ( read threads here), there is no way to code around this
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      06-13-2019, 12:39 PM   #3
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Originally Posted by Bymep View Post
Did your car come from factory with Non run flat summer tires? If not, then it doesnt have increased speed limiter. AFAIK ( read threads here), there is no way to code around this
It has the 20" optioned wheels with runflats from factory.
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      06-13-2019, 01:05 PM   #4
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Flash tunes do remove speed limiter but piggybacks cannot.

My stock 540i easily reaches but does not go beyond 260kmh (speedo indicated)
That is 162mph
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      06-13-2019, 02:01 PM   #5
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Called bmw NA and my car is limited to 135mph due to original build with 19" wheels even though it was delivered to dealer with optional 636 BK 20's with runflats
Kinda sad about that.....
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      06-13-2019, 10:40 PM   #6
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Quote:
Originally Posted by AddyDaddy View Post
Called bmw NA and my car is limited to 135mph due to original build with 19" wheels even though it was delivered to dealer with optional 636 BK 20's with runflats
Kinda sad about that.....
Like others have said, the speed limiter is set based on the tires that it had when it left the factory. Sounds like your dealer did a wheel swap. You may want to check to see what tire size is shown on the driver side door sticker.
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      06-14-2019, 06:29 AM   #7
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Is this a US market "feature" as here in Europe /UK I thought our cars were limited to 155mph (assuming the car can get up to that speed of course)

In reality it makes no difference here in the uk as the speed limit is 70mph although I would just once like to drive my car up to that speed on a private road / runway to see what it is like
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      06-14-2019, 07:30 AM   #8
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Quote:
Originally Posted by AP View Post
Is this a US market "feature" as here in Europe /UK I thought our cars were limited to 155mph (assuming the car can get up to that speed of course)

In reality it makes no difference here in the uk as the speed limit is 70mph although I would just once like to drive my car up to that speed on a private road / runway to see what it is like
Probably because we mostly gets all season run flat as standard here, 130mph is plenty for me here though...
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      06-14-2019, 11:29 AM   #9
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Quote:
Originally Posted by AP View Post
Is this a US market "feature" as here in Europe /UK I thought our cars were limited to 155mph (assuming the car can get up to that speed of course)

In reality it makes no difference here in the uk as the speed limit is 70mph although I would just once like to drive my car up to that speed on a private road / runway to see what it is like
It's all based upon the limits of the tires that were shipped on the vehicle. Unfortunately for those that had all-season non-run flats, there's no way to remove the limit via coding.
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      06-14-2019, 01:00 PM   #10
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Quote:
Originally Posted by VirtualGuitars View Post
Quote:
Originally Posted by AP View Post
Is this a US market "feature" as here in Europe /UK I thought our cars were limited to 155mph (assuming the car can get up to that speed of course)

In reality it makes no difference here in the uk as the speed limit is 70mph although I would just once like to drive my car up to that speed on a private road / runway to see what it is like
It's all based upon the limits of the tires that were shipped on the vehicle. Unfortunately for those that had all-season non-run flats, there's no way to remove the limit via coding.
BMW NA said dealer that I got car from can code or raise limiter for me. They owe me a favor so we'll see. Not the end of the world either way
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      06-14-2019, 01:03 PM   #11
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Quote:
Originally Posted by AddyDaddy View Post
Quote:
Originally Posted by VirtualGuitars View Post
Quote:
Originally Posted by AP View Post
Is this a US market "feature" as here in Europe /UK I thought our cars were limited to 155mph (assuming the car can get up to that speed of course)

In reality it makes no difference here in the uk as the speed limit is 70mph although I would just once like to drive my car up to that speed on a private road / runway to see what it is like
It's all based upon the limits of the tires that were shipped on the vehicle. Unfortunately for those that had all-season non-run flats, there's no way to remove the limit via coding.
BMW NA said dealer that I got car from can code or raise limiter for me. They owe me a favor so we'll see. Not the end of the world either way
Let's hope so. We all need the ability to drive 155 mph!
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      06-14-2019, 01:14 PM   #12
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Quote:
Originally Posted by VirtualGuitars View Post
Quote:
Originally Posted by AddyDaddy View Post
Quote:
Originally Posted by VirtualGuitars View Post
Quote:
Originally Posted by AP View Post
Is this a US market "feature" as here in Europe /UK I thought our cars were limited to 155mph (assuming the car can get up to that speed of course)

In reality it makes no difference here in the uk as the speed limit is 70mph although I would just once like to drive my car up to that speed on a private road / runway to see what it is like
It's all based upon the limits of the tires that were shipped on the vehicle. Unfortunately for those that had all-season non-run flats, there's no way to remove the limit via coding.
BMW NA said dealer that I got car from can code or raise limiter for me. They owe me a favor so we'll see. Not the end of the world either way
Let's hope so. We all need the ability to drive 155 mph!
Well I actually live about 15 minutes from the race track club braman uses. So yes for track days I was interested in more than 130. Don't need it in the quarter mile track they have, but main track could be used
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      06-14-2019, 03:30 PM   #13
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Quote:
Originally Posted by AddyDaddy View Post
So got Dinan tune yesterday,
Still testing it and loving it.

Today on a closed course, I slammed it in sport mode and at while accelerating it stopped at 129mph at redline just like my M5 would stop at speed limiter. I didn't get to re try because I let off and slowed down. But was very strange, hard pull and stopped at redline 5th or 6th gear like I had it in manual and didn't shift, but it was in auto. Any ideas?
your car don't have increased limiter option. If you don't have it from the factory you're out of luck unless you code it
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      06-14-2019, 03:32 PM   #14
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Quote:
Originally Posted by AddyDaddy View Post
BMW NA said dealer that I got car from can code or raise limiter for me. They owe me a favor so we'll see. Not the end of the world either way
that's not my understanding but let me know if you're successful at it
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      06-14-2019, 03:50 PM   #15
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Originally Posted by bimmer_335 View Post
Quote:
Originally Posted by AddyDaddy View Post
BMW NA said dealer that I got car from can code or raise limiter for me. They owe me a favor so we'll see. Not the end of the world either way
that's not my understanding but let me know if you're successful at it
Yeah it's a 50/50 chance in my eyes the way BMW NA said it's up to the dealer. They may just do it seeing that my family and I buy 5-9 cars a year from them. They may also not do it for liability reasons. I'm fine either way, and if it comes down to it I'll find a tuner. I was just shocked that an M550 was locked down at 130
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      06-14-2019, 04:01 PM   #16
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Quote:
Originally Posted by AddyDaddy View Post
I was just shocked that an M550 was locked down at 130
It's not the M550, it's the OEM tires selected not supporting higher speeds. A McLaren with the same run flats would be limited to 130 also.
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      06-15-2019, 12:36 PM   #17
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I would totally agree about the tires. My M550xi which came with 20in run flats and i have had it to 140. I slowed myself down not the car, so i am sure it would keep going. I wonder though when going it vehicle selections in the idrive i can select between summer tires and winter tires. I can also choose between different tire size options. 19in or 20in. also can select speeds less then 100mph or greater than 100mph.

Out of curiosity if your Bmw came with 19in, and its limiter is set to 130. Can you just select in the idrive the options for summer tires, 20in, and select greater then 100mph. Would that raise the limiter?
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      06-15-2019, 01:00 PM   #18
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I would totally agree about the tires. My M550xi which came with 20in run flats and i have had it to 140. I slowed myself down not the car, so i am sure it would keep going. I wonder though when going it vehicle selections in the idrive i can select between summer tires and winter tires. I can also choose between different tire size options. 19in or 20in. also can select speeds less then 100mph or greater than 100mph.

Out of curiosity if your Bmw came with 19in, and its limiter is set to 130. Can you just select in the idrive the options for summer tires, 20in, and select greater then 100mph. Would that raise the limiter?
Negative. It's hard-coded when it leaves the factory. The speed limiter is set to 155 mph if yours came with performance run-flats. It's a huge liability for BMW to set he limiter to anything over than what the tires are rated for when it leaves BMW.
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      06-17-2019, 03:20 PM   #19
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Quote:
Originally Posted by AddyDaddy View Post
Yeah it's a 50/50 chance in my eyes the way BMW NA said it's up to the dealer. They may just do it seeing that my family and I buy 5-9 cars a year from them. They may also not do it for liability reasons. I'm fine either way, and if it comes down to it I'll find a tuner. I was just shocked that an M550 was locked down at 130
whoever ordered the car messed up. Many think that with MSport comes the increased limiter. That's not the case and not all salesmen know this.
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      06-17-2019, 03:23 PM   #20
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Quote:
Originally Posted by VirtualGuitars View Post
Negative. It's hard-coded when it leaves the factory. The speed limiter is set to 155 mph if yours came with performance run-flats. It's a huge liability for BMW to set he limiter to anything over than what the tires are rated for when it leaves BMW.
Not true.

you can have run flat tires but still not have the increased limiter. Its an option that need to be specifically included in the order.
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      06-17-2019, 04:21 PM   #21
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Originally Posted by bimmer_335 View Post
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Originally Posted by VirtualGuitars View Post
Negative. It's hard-coded when it leaves the factory. The speed limiter is set to 155 mph if yours came with performance run-flats. It's a huge liability for BMW to set he limiter to anything over than what the tires are rated for when it leaves BMW.
Not true.

you can have run flat tires but still not have the increased limiter. Its an option that need to be specifically included in the order.
BS. BMW isn't going to let a car be ordered with a 155 mph limiter and non-performance tires. That would a huge liability. WhoTF would want to go 155 mph without proper tires anyway? #AnotherNeverEndingThread
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      06-17-2019, 04:30 PM   #22
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Quote:
Originally Posted by VirtualGuitars View Post
Quote:
Originally Posted by bimmer_335 View Post
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Originally Posted by VirtualGuitars View Post
Negative. It's hard-coded when it leaves the factory. The speed limiter is set to 155 mph if yours came with performance run-flats. It's a huge liability for BMW to set he limiter to anything over than what the tires are rated for when it leaves BMW.
Not true.

you can have run flat tires but still not have the increased limiter. Its an option that need to be specifically included in the order.
BS. BMW isn't going to let a car be ordered with a 155 mph limiter and non-performance tires. That would a huge liability. WhoTF would want to go 155 mph without proper tires anyway? #AnotherNeverEndingThread
So dealer submitted a ticket to BMW NA, since the new car from dealer came with a wheel and tire option that in their (BMW NA and braman bmw)words support 186mph and they will know in a couple days if they can set limiter to 155
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