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E90/E91/E92/E93 (2006 - 2013)
The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

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  #1  
Old 11-15-2014, 03:00 PM
Loganpools Loganpools is offline
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Mein Auto: 2008 335i
Tire pressure

My tire pressure light came on and then the DSC malfunction light . I put 45psi in each tire as cold psi reads 50, and then pulled car out of garage turned steering wheel all the way to left and then to right. backed out of drive and took off. At that point the warning lights went off but came back on later during the day. Any ideals?? 35k for miles tires are in good condition, its going to shop Monday but just was wondering
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Old 11-15-2014, 04:51 PM
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thekurgan thekurgan is offline
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TPS monitor malfunction perhaps, as you've got plenty of air in the tires, lol.
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Old 11-15-2014, 05:14 PM
GG Hyundai GG Hyundai is offline
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Cracked rim
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Old 11-15-2014, 05:54 PM
asus389 asus389 is offline
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45 psi and cold is 50? thats probably max pressure rating for the tire. What does your door jamb say for the size wheels/tires you are running?
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Old 11-16-2014, 08:10 AM
fdriller9 fdriller9 is offline
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45psi is WAY too much pressure.

You don't follow the rating the on tire, you follow the rating posted on your door jamb. It should be around 35psi.

Tire pressure is based off of vehicle load. You adjust pressure for vehicle load, not for the wheel/tire.
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Old 11-16-2014, 12:22 PM
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CALWATERBOY DUE CALWATERBOY DUE is offline
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Quote:
Originally Posted by Loganpools View Post
My tire pressure light came on and then the DSC malfunction light . I put 45psi in each tire as cold psi reads 50, and then pulled car out of garage turned steering wheel all the way to left and then to right. backed out of drive and took off. At that point the warning lights went off but came back on later during the day. Any ideals?? 35k for miles tires are in good condition, its going to shop Monday but just was wondering

Well LP, with 45 psi in each & every shoe, you give new meaning to the phrase "Pothole Explosion"

Does your ride seem............firm? Do you know, your owner's manual gives good recommendation re: tire psi?



Last edited by CALWATERBOY DUE; 11-16-2014 at 12:24 PM.
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Old 11-16-2014, 12:32 PM
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thekurgan thekurgan is offline
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I'd go with nitrogen instead

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Old 11-16-2014, 02:10 PM
Pilgrim Pilgrim is offline
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Do not exceed the maximum pressure shown on the sidewalls on your tires. You can get away with that for a short distance and in cold temps, but it is dangerous for extended driving. It also makes the ride much more harsh.

If the warning is on when the pressure is above the pressure shown on the door sticker, you most likely have a failed TMPS sending unit.
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Old 11-16-2014, 04:21 PM
HikerToo HikerToo is offline
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Mein Auto: 2011 328i XDrive
Try to initialize the flat tire pressure monitor.
Also may want to put correct air pressure in tire first
-------
From Manual
Flat Tire Monitor FTM*
The concept
The system does not measure the actual inflation
pressure in the tires.
The system detects a tire pressure loss due to
speed comparisons among the individual
wheels as you drive.
In the event of pressure loss, the rolling circumference
changes and, thus, the rotating speed
of the affected wheel. The system detects this
and reports it as a flat tire.
Functional requirement
The system has to have been initialized at the
correct inflation pressure; otherwise, a reliable
reporting of a flat tire is not assured.
Each time a tire inflation pressure has been corrected
or a wheel or tire has been changed,
reinitialize the system.
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Old 11-17-2014, 02:23 AM
bahooki bahooki is offline
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Mein Auto: 2010 328i Coupe
You should only be running like 32.5psi to start with, and try resetting the system. Worked for me.
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