BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read
M2 Technical Topics > Track / Autocross / Dragstrip > extended TPMS data?

Post Reply
 
Thread Tools Search this Thread
      08-23-2021, 05:16 PM   #1
inTgr8r
Lieutenant General
inTgr8r's Avatar
Canada
2422
Rep
11,665
Posts

Drives: M2 Comp
Join Date: Mar 2006
Location: Toronto

iTrader: (10)

extended TPMS data?

I came across this in a random tack vid today.

I'm aware that speed can be coded but haven't seen extended TPMS data with PSI and temps before.
Love this data during track sessions.

Name:  Digi speed and tires coding.png
Views: 214
Size:  1.57 MB
Appreciate 0
      08-23-2021, 05:30 PM   #2
FaRKle!
Brigadier General
3995
Rep
3,530
Posts

Drives: 328d Wagon, M2 Comp, i4 eD35
Join Date: Sep 2016
Location: Bay Area, CA

iTrader: (4)

Garage List
This info has been able to be coded for quite a while on the Fxx platform. I did it on my wagon back in 2016.
The temperature isn't very useful though (absolutely not a replacement for a proper pyrometer).
__________________
-328d Wagon Build Log (with helpful reference links)
-My YouTube Channel for some of the best DIYs and in depth information

Please don't PM me for suspension recommendations unless interested in paid private consultations.
Appreciate 1
inTgr8r2421.50
      08-23-2021, 05:38 PM   #3
inTgr8r
Lieutenant General
inTgr8r's Avatar
Canada
2422
Rep
11,665
Posts

Drives: M2 Comp
Join Date: Mar 2006
Location: Toronto

iTrader: (10)

Quote:
Originally Posted by FaRKle! View Post
This info has been able to be coded for quite a while on the Fxx platform. I did it on my wagon back in 2016.
The temperature isn't very useful though (absolutely not a replacement for a proper pyrometer).
agreed re pyrometer.
I do find temps useful during the session though.
e.g. on clockwise track with predominantly right turns.
If I see my inside rear temps getting excessive I can adjust my methods.
Likewise for outside front....

The whole truth doesn't come out though until later with data analysis
Appreciate 0
      08-23-2021, 05:51 PM   #4
ZM2
Brigadier General
2784
Rep
3,681
Posts

Drives: 2017 LBB M2
Join Date: Mar 2017
Location: Baltimore

iTrader: (1)

Canada cars by default use the wheel speed sensors to detect low pressure, so PSI isn’t displayed. But you can code it in.

Some guys in the US actually code their cars like yours so the TPMS doesn’t trigger below 27psi and send the car into Comfort mode when starting with cold tires.

For me, I use the psi read outs when on track, and used to start PSI at 26 if needed (depends on tires, setup, and track conditions), reset TPMS in the pits before rolling out, and use the brakes on the out lap to heat up the tires above 27psi before the TPMS finishes its reset.

The data on screen is valuable, as you’ll be able to see hot lap temps and pressures, which are drastically different from what a lot of guys do and read them in the paddock after a cool off lap and the inevitable heat soak from the brakes into the tires while you’re running around the car checking pressures—that’s trash data.

And we only use the pyrometer on race days (diff car), it’s overkill for HPDE and you have to do quick hot pits in/out with a team member for the data to be consistent and worthwhile. TPMS display and watching tire wear is good enough for HPDE.

A side note that most of the pressure/temp increase on our cars (esp the OG’s) is from poor brake ventilation and sizing. Once I switched to AP brakes, I did not have to start with such low pressures bc the heat management is better and the temp/pressure increases are less, so I never get any low starting pressure TPMS fits.
Appreciate 1
Got f1?679.50
      08-23-2021, 06:49 PM   #5
inTgr8r
Lieutenant General
inTgr8r's Avatar
Canada
2422
Rep
11,665
Posts

Drives: M2 Comp
Join Date: Mar 2006
Location: Toronto

iTrader: (10)

ZM2
That's great information, thanks!!!
I didn't realise that CDN cars were using speed sensors.

I'm in the process of gathering info for a full on track build while I'm hunting down the right car for the build.

I had AP brakes on my E92 M3 and absolutely loved them.
they will be top priority on the M2C
Appreciate 0
      08-23-2021, 08:51 PM   #6
tux2005
First Lieutenant
Canada
234
Rep
349
Posts

Drives: 2017 M2
Join Date: Mar 2014
Location: Toronto, Canada

iTrader: (0)

I believe with the M2C that BMW Canada had switched to having TPMS, the original M2s, at minimum 2016 and 2017s are speed sensors but I think they may have switched to TPMS with some 2018.

Having said that, I think others have also reported that the TPMS system was not quite as nerfy as it was on at least 2016-2017 US M2s. Apparently they will still warn with very low pressures but you don't get automatically bumped out of DSC Off, MDM Modes or Sport+ anymore.

I can't speak to the accuracy of the data from the TPMS systems since my 2017 doesn't have it but I would have been interested in seeing it myself. I wouldn't expect to take the values as absolutely true but would have liked to be able to see the changes and have more data for seeing when how quickly tires have warmed up, when they may be too hot, etc. Sure, you can feel that but it'd be interesting to see the data trends at least. Especially when I was still learning rapidly (I was still quite a novice when I got my M2), it's also be interesting to see with different tire compounds like I'm experiencing this year as I can't get stock of tires that I want.
Appreciate 1
inTgr8r2421.50
      08-23-2021, 09:20 PM   #7
inTgr8r
Lieutenant General
inTgr8r's Avatar
Canada
2422
Rep
11,665
Posts

Drives: M2 Comp
Join Date: Mar 2006
Location: Toronto

iTrader: (10)

tux2005 Thanks !
I see you're in the GTA, do you get out with Trillium?
Appreciate 0
      08-24-2021, 08:27 AM   #8
tux2005
First Lieutenant
Canada
234
Rep
349
Posts

Drives: 2017 M2
Join Date: Mar 2014
Location: Toronto, Canada

iTrader: (0)

Yup, I'm a regular at the Trillium events. I'll be at CTMP this Friday through Sunday.
Appreciate 0
      08-24-2021, 10:36 AM   #9
inTgr8r
Lieutenant General
inTgr8r's Avatar
Canada
2422
Rep
11,665
Posts

Drives: M2 Comp
Join Date: Mar 2006
Location: Toronto

iTrader: (10)

Quote:
Originally Posted by tux2005 View Post
Yup, I'm a regular at the Trillium events. I'll be at CTMP this Friday through Sunday.
that's great.... I'll be there on Saturday, I'll look for you
Appreciate 0
      08-24-2021, 12:41 PM   #10
nioh_lbbm2
Lieutenant Colonel
nioh_lbbm2's Avatar
1717
Rep
1,899
Posts

Drives: M2
Join Date: Mar 2018
Location: California

iTrader: (0)

I'm confused. TPMS shows temp and PSI by default. What exactly is new here?
Appreciate 0
      08-25-2021, 01:54 AM   #11
n8dgr84
572whp Stock Turbos/DP E60 Tune by Tier1Tuning
156
Rep
275
Posts

Drives: M2C - 6MT - Flex Fuel
Join Date: Apr 2017
Location: BC

iTrader: (0)

Quote:
Originally Posted by nioh_lbbm2 View Post
I'm confused. TPMS shows temp and PSI by default. What exactly is new here?
Just Canadians discovering stock features
Appreciate 1
inTgr8r2421.50
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 09:48 AM.




m2
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST