2019 X3 M40i Delivery tire pressure

allen3ybq · 10-25-2018, 01:39 PM

Just picked up this car last week and the tire pressure seems to be way too high at 39 psi front and 45 psi rear cold.
The numbers show at the door are 33 psi and 38 psi rear cold.
Any thoughts? Thanks!

freitz · 10-25-2018, 01:40 PM

Quote:

Originally Posted by allen3ybq

Just picked up this car last week and the tire pressure seems to be way too high at 39 psi front and 45 psi rear cold.
The numbers show at the door are 33 psi and 38 psi rear cold.
Any thoughts? Thanks!

What is your tire size?

I am 19" 255's 32 front 35 rear.

allen3ybq · 10-25-2018, 01:55 PM

Quote:

Originally Posted by freitz

Quote:

Originally Posted by allen3ybq

Just picked up this car last week and the tire pressure seems to be way too high at 39 psi front and 45 psi rear cold.
The numbers show at the door are 33 psi and 38 psi rear cold.
Any thoughts? Thanks!

What is your tire size?

I am 19" 255's 32 front 35 rear.

21" and the door panel says 33 front and 38 rear cold.

teaston · 10-25-2018, 02:22 PM

Quote:

Originally Posted by allen3ybq

Just picked up this car last week and the tire pressure seems to be way too high at 39 psi front and 45 psi rear cold.
The numbers show at the door are 33 psi and 38 psi rear cold.
Any thoughts? Thanks!

Are you looking at the loaded or unloaded pressures on the door?

I usually inflate the tyres to somewhere between the two figures.

ibimmer954 · 10-25-2018, 07:04 PM

TPMS isn't always accurate. So double check with a quality meter. I once got my car back from the dealer and my tire pressure was 50psi! Idiots.

vampire81 · 10-27-2018, 11:02 PM

Got mine with 40-42 psi on all 4.
Got a new M2 Competition yesterday with 40psi fronts and 38psi rears.
Probably factory over-inflate for shipping?!

allen3ybq · 10-27-2018, 11:05 PM

Quote:

Originally Posted by vampire81

Got mine with 40-42 psi on all 4.
Got a new M2 Competition yesterday with 40psi fronts and 38psi rears.
Probably factory over-inflate for shipping?!

Did you adjust it or leave them as is?

tastes jigga · 10-28-2018, 06:10 AM

It always comes over inflated from the factory, or at least that has been my experience.

skier219 · 10-28-2018, 07:33 AM

Cars are always shipped with the tire pressure high, and it's often left high while the vehicle sits on the lot (to avoid flat spots). It should be lowered before delivery. ANd if you're like me and live in an area with frequent seasonal temperature changes, you will probably be adjusting pressure monthly.

My TPMS reads low (by 2-3 psi) compared to an AccuTire digital gauge I have. I want to get another gauge for a third opinion to see which is right. TPMS can be calibrated to a known pressure if it's determined that is the issue.

383vett · 10-28-2018, 01:19 PM

The pressures are high from the factory. They should have. Been adjusted during the pdi. Just correct it with an accurate tore gauge. Don't rely on the tps monitor readings.

10-25-2018, 01:39 PM	#1
allen3ybq Lieutenant 448 Rep 525 Posts Drives: BMW M3 Join Date: Oct 2016 Location: CA iTrader: (1)	2019 X3 M40i Delivery tire pressure Just picked up this car last week and the tire pressure seems to be way too high at 39 psi front and 45 psi rear cold. The numbers show at the door are 33 psi and 38 psi rear cold. Any thoughts? Thanks! Attached Images
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10-25-2018, 07:04 PM	#5
ibimmer954 Major 138 Rep 1,424 Posts Drives: '23 i4 M50, '15 M3, '18 911 Join Date: Jul 2007 Location: San Diego, California, USA iTrader: (0) Garage List 2015 BMW M3 [9.75] 2023 BMW i4 M50 [0.00] 2018 Porsche 911 C4S [0.00] 2019 BMW X4 M40i [0.00]	TPMS isn't always accurate. So double check with a quality meter. I once got my car back from the dealer and my tire pressure was 50psi! Idiots.
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10-27-2018, 11:02 PM	#6
vampire81 Lieutenant 435 Rep 435 Posts Drives: '19 M2C / '19 ZL1 Join Date: Sep 2012 Location: desert iTrader: (0)	Got mine with 40-42 psi on all 4. Got a new M2 Competition yesterday with 40psi fronts and 38psi rears. Probably factory over-inflate for shipping?!
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10-28-2018, 06:10 AM	#8
tastes jigga First Lieutenant 316 Rep 343 Posts Drives: '19 750i xDrive Join Date: Jun 2012 Location: Illinois iTrader: (0) Garage List 2019 BMW X3 M40i [0.00]	It always comes over inflated from the factory, or at least that has been my experience.
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10-28-2018, 07:33 AM	#9
skier219 Captain 607 Rep 969 Posts Drives: X3 M40i, M2C, Ferrari 328 Join Date: Nov 2010 Location: USA iTrader: (0)	Cars are always shipped with the tire pressure high, and it's often left high while the vehicle sits on the lot (to avoid flat spots). It should be lowered before delivery. ANd if you're like me and live in an area with frequent seasonal temperature changes, you will probably be adjusting pressure monthly. My TPMS reads low (by 2-3 psi) compared to an AccuTire digital gauge I have. I want to get another gauge for a third opinion to see which is right. TPMS can be calibrated to a known pressure if it's determined that is the issue.
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10-28-2018, 01:19 PM	#10
383vett Major 626 Rep 1,044 Posts Drives: 2018 X3 M40i, 2012 X3 Xdrive35 Join Date: Aug 2012 Location: Moraga, California iTrader: (0)	The pressures are high from the factory. They should have. Been adjusted during the pdi. Just correct it with an accurate tore gauge. Don't rely on the tps monitor readings. __________________ 2016 Z06 Vette, 10.53@132 1984 Vette, 406, 10.23@131 2021 SQ5
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