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      06-03-2018, 07:19 AM   #1
MTHX
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Some of you have done official 1/4 miles run on circuits?

Can i get your time and trap speed.

Bimmerpost member only please.
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      06-04-2018, 12:43 PM   #2
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The good news is - that since I may be one of the first CP owners - I will be taking it to the track the moment the break in is complete. I did the same for my M550 - Bimmerpost covered it as I was the first...
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      06-04-2018, 01:35 PM   #3
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Quote:
Originally Posted by vtknight View Post
The good news is - that since I may be one of the first CP owners - I will be taking it to the track the moment the break in is complete. I did the same for my M550 - Bimmerpost covered it as I was the first...
I'm planning a road trip just so I can get some extra miles in and break in ASAP lol
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      06-21-2018, 02:21 PM   #4
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Quote:
Originally Posted by vtknight View Post
The good news is - that since I may be one of the first CP owners - I will be taking it to the track the moment the break in is complete. I did the same for my M550 - Bimmerpost covered it as I was the first...
Lol me to...
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      06-27-2018, 08:56 AM   #5
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Lol me to...
Nice!
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      06-27-2018, 10:55 AM   #6
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I did 11 flat
But I’m sure I can do better
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      06-29-2018, 05:12 PM   #7
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Originally Posted by koko f90 View Post
I did 11 flat
But I’m sure I can do better

what is your mph?
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      07-01-2018, 05:55 AM   #8
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Originally Posted by koko f90 View Post
I did 11 flat
But I’m sure I can do better
Post your slip please !
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      07-01-2018, 04:16 PM   #9
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I will probably goto the dragstrip in a few weeks, just need to get used to the car first.
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      07-01-2018, 06:13 PM   #10
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Anyone going to the strip, test your LC before going. I can use LC in the street but not at the track. The front brakes are not clamping hard enough to hold the car perfectly still that you need in staging. You will slightly roll forward and red light. I’m going to burnish my brakes this week and see if that fixes it. If not, time for softer front brake pads.
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      07-02-2018, 09:55 AM   #11
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what is your mph?
126
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      07-02-2018, 11:29 AM   #12
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Quote:
Originally Posted by onfireX5 View Post
Anyone going to the strip, test your LC before going. I can use LC in the street but not at the track. The front brakes are not clamping hard enough to hold the car perfectly still that you need in staging. You will slightly roll forward and red light. I’m going to burnish my brakes this week and see if that fixes it. If not, time for softer front brake pads.
Hi Onfire, correct me if I am wrong, but you had the CCB?
Are you going straight into launch control and it is not holding, or just preloading with brake/gas? Up to what RPM does it hold?
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      07-02-2018, 01:38 PM   #13
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Originally Posted by scotty91ss View Post
Hi Onfire, correct me if I am wrong, but you had the CCB?
Are you going straight into launch control and it is not holding, or just preloading with brake/gas? Up to what RPM does it hold?
Steels. Straight to LC. Same method with my X5M holds all day long at 2800rpm. M5 starts to slowly creep. Fine for Vbox or Draggy street runs. Not fine on the track. LC goes to 2800rpm. Can not adjust it downward to see what rpm would hold. No biggy....just something to figure out.
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      07-03-2018, 12:19 AM   #14
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Quote:
Originally Posted by onfireX5 View Post
Steels. Straight to LC. Same method with my X5M holds all day long at 2800rpm. M5 starts to slowly creep. Fine for Vbox or Draggy street runs. Not fine on the track. LC goes to 2800rpm. Can not adjust it downward to see what rpm would hold. No biggy....just something to figure out.
That is surprising...I know you have a ton of experience with drags - and I hate to ask - but you are holding that brake with your left foot as hard as possible? My E63S (last gen) would not even hold LC unless I stomped hard. Please let us (me) know as I have Steelies too...
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      07-03-2018, 08:18 AM   #15
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Originally Posted by vtknight View Post
That is surprising...I know you have a ton of experience with drags - and I hate to ask - but you are holding that brake with your left foot as hard as possible? My E63S (last gen) would not even hold LC unless I stomped hard. Please let us (me) know as I have Steelies too...
To the point of worrying I might bend/break something. If they are HOT they hold “ok”. I think burnishing will fix it as the caliper is as slick as glass.
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      07-03-2018, 01:25 PM   #16
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Quote:
Originally Posted by onfireX5 View Post
To the point of worrying I might bend/break something. If they are HOT they hold “ok”. I think burnishing will fix it as the caliper is as slick as glass.
Yikes...please do let me know - I just don't think this car should need to do burnishing - especially on steelies. That said - please let us know and good luck!
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      07-09-2018, 05:51 AM   #17
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Quote:
Originally Posted by onfireX5 View Post
To the point of worrying I might bend/break something. If they are HOT they hold “ok”. I think burnishing will fix it as the caliper is as slick as glass.
Same apply to CCB?
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      07-09-2018, 07:09 AM   #18
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Same apply to CCB?
Short term answer is to heat the brakes up and they will hold. My X5M holds fine cold. M5 does not. M5 pads dust less and are quiet. X5M pads dust a lot, squeal from brake dust, but cold clamp like a champ. So make a couple of hard stops to get the rotors and pads hot and the M5 is fine. Get caught in an hour long staging lane at the track, you’re screwed. (Or ride the brakes as much as you can as the lane advances).
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      07-09-2018, 09:05 PM   #19
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Here's my slip. Apparently I need to go home and practice launch control. I've been reading up on it and its possible I wasn't hitting the gas quickly enough to the floor to get it to kick in.

Another thing I saw about launch control is that the car may be short shifting first to improve acceleration.

Has anyone heard of getting bigger turbos for the M5? I saw an M4 video with some built up turbos. Maybe it'd make a better track car. I tested out an M4 once though and thought it wasn't what I was looking for.

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Last edited by M5speed; 07-09-2018 at 09:10 PM..
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      07-13-2018, 04:14 PM   #20
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Yikes...please do let me know - I just don't think this car should need to do burnishing - especially on steelies. That said - please let us know and good luck!
Good news. Burnishing fixed my problem. It now clamps like a champ. Let it sit for 2 hours at my shop, drove off and did not touch the brakes for a 10 minute drive. Stopped, straight to LC...,. Perfect Hold !
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      07-16-2018, 11:21 AM   #21
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I did a 11.6 at 126 MPH at the UK track Santa Pod. Launch control would not activate for me either. This was just after the RIS so not sure if it needs some more miles after the 1200?
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      07-16-2018, 11:30 AM   #22
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Originally Posted by Imran@Evolve View Post
I did a 11.6 at 126 MPH at the UK track Santa Pod. Launch control would not activate for me either. This was just after the RIS so not sure if it needs some more miles after the 1200?
what was the external temp? day run or night run?
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