Tirerack
Use the following links to go directly to useful tirerack winter items: Tirerack Winter Tires. Gary's Winter Tire FAQ.
Using the links directly supports E90Post with tirerack sales commision!

  E90Post
 


TireRack

   PLEASE HELP SUPPORT E90POST BY DOING YOUR TIRERACK SHOPPING FROM THIS BANNER, THANKS!
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Wheels and Tires Forum Sponsored by The Tire Rack > Tire PSI



Wheels and Tires forum Sponsored by The Tire Rack
Please help to directly support e90post by doing your tirerack shopping from the above link. For every sale made through the link, e90post gets sponsor support to keep the site alive. Disclaimer

Reply
 
Thread Tools Search this Thread
      09-27-2005, 11:20 PM   #1
RyBMW
Major
RyBMW's Avatar
15
Rep
1,035
Posts

 
Drives: X5
Join Date: Jun 2005
Location: NYC

iTrader: (1)

Garage List
2012 BMW X5  [0.00]
2008 335i  [0.00]
Tire PSI

I just checked my tire psi and they were all at about 27-29psi. I used a analog tire pressure guage.

How come the tire pressure monitoring system didn't indicate that the pressure is low?
When I add more air to bring the psi up to spec, do I have to update it in the iDrive also?
Appreciate 0
      09-28-2005, 01:47 AM   #2
Barry626
Captain
United_States
11
Rep
725
Posts

 
Drives: Coming: 2012 135i
Join Date: Jun 2005
Location: NY

iTrader: (0)

If all 4 tires have same psi then car won't tell you.
Yes, if u change air to 32 front & 36 rear for 330i...
you need to update FTM in iDrive.
Appreciate 0
      09-28-2005, 01:51 AM   #3
visor
BMW, can I have some LSD please?
visor's Avatar
Canada
39
Rep
1,540
Posts

 
Drives: '13 F30 328xi
Join Date: Jun 2005
Location: Vancouver, Canada

iTrader: (0)

1. The TPMS works by monitoring the difference in rotation (therefore, tire circumference) of the front left tire vs the rear right, and the front right vs the rear left, ie. diagonally. Why this way? I don't really know, maybe someone else can answer that. So, if all the tires were to lose pressure at the same rate at the same time, then no alarm would sound. Hmmm, remind me not to drive thru a road that is completely filled with nails....

2. Yes. It may also be on your OBC stalk by the steering wheel.
Appreciate 0
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
Forum Jump


All times are GMT -5. The time now is 12:27 PM.




e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
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