How to determine your tire PSI from the manual. - XBimmers

egal · 11-13-2012, 03:38 PM

I have the 369m wheels. The tires are 245/45/19 102v.

In the electronic manual it would appear that the recommended PSI should be 41/46. That seemed high.

I then consulted the owners manual, page 209-210 and there it says 41/46 under full load. 32/38 for partial load.

So that seems like a big difference! Our x3 occupancy stats:
Ave passengers 2.5
Mode=2 Min 1 max 3.

What tire pressure should I fill to? 41/46??

faztaz · 11-13-2012, 04:05 PM

I would assume 32/38 is the cold pressure ratings at no load (ie the recommended settings).

I have mine at 34/38 with the same rim/tire package as you.

bichoo · 11-13-2012, 04:06 PM

My 369m are at 32/38

DonC · 11-13-2012, 05:56 PM

As delivered mine had 34/38

lbjgh · 11-13-2012, 09:23 PM

I set my winter tires to 32/25 f/r

18" wheels and tires

I do notice a fair bit of tramlining on rutted roads with the winter tire at the specified pressure.

April1 · 11-14-2012, 01:05 AM

Quote:

Originally Posted by lbjgh

I set my winter tires to 32/25

Is it typo?

Nahoa · 11-14-2012, 05:45 AM

Depends on your driving and your goal. I prefer a firmer ride, less movement, and a greater ability to absorb impact, so I run them on the higher end of the range. Mine are currently set at 38/41.

lbjgh · 11-14-2012, 08:44 PM

haha, yep. 32/35.

Quote:

Originally Posted by April1

Is it typo?

egal · 11-16-2012, 09:04 AM

Thank you, I will adjust on your recommendations! I did set it to the 40's, it just didn't seem right. I'll move it back to the 30's.

11-13-2012, 03:38 PM	#1
egal Enlisted Member Drives: X3 Join Date: Dec 2011 Location: Midwest Posts: 33 iTrader: (0)	How to determine your tire PSI from the manual. I have the 369m wheels. The tires are 245/45/19 102v. In the electronic manual it would appear that the recommended PSI should be 41/46. That seemed high. I then consulted the owners manual, page 209-210 and there it says 41/46 under full load. 32/38 for partial load. So that seems like a big difference! Our x3 occupancy stats: Ave passengers 2.5 Mode=2 Min 1 max 3. What tire pressure should I fill to? 41/46??
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11-13-2012, 05:56 PM	#4
DonC Second Lieutenant Drives: 2013 X3 3.5i M sport, etc Join Date: Aug 2012 Location: near Seattle Posts: 236 iTrader: (0)	As delivered mine had 34/38 __________________ 2013 X3 3.5i AW,Msprt,rear fogs,PS,CP, Tech, etc... Other cars 2005 S2000 2007 TL-S

11-13-2012, 09:23 PM	#5
lbjgh Major Drives: 2013 AW X3 M-Sport Join Date: Dec 2011 Location: North of Toronto Posts: 1,237 iTrader: (0)	I set my winter tires to 32/25 f/r 18" wheels and tires I do notice a fair bit of tramlining on rutted roads with the winter tire at the specified pressure. __________________ 2013, AW, xDrive35i, M Sport Package, Technology Package, Dynamic Comfort Package, Premium Package, 3M Clear Bra, Euro foglight switch, a few coded fixes

11-14-2012, 05:45 AM	#7
Nahoa Lieutenant Colonel Drives: F25 35i Mineral Silver/Black Join Date: May 2008 Location: Virginia Posts: 1,853 iTrader: (0)	Depends on your driving and your goal. I prefer a firmer ride, less movement, and a greater ability to absorb impact, so I run them on the higher end of the range. Mine are currently set at 38/41. __________________

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11-13-2012, 04:05 PM	#2
faztaz 08 X3 6spd Drives: 13 X3 35i MSport Join Date: Apr 2012 Location: NJ Posts: 52 iTrader: (0)	I would assume 32/38 is the cold pressure ratings at no load (ie the recommended settings). I have mine at 34/38 with the same rim/tire package as you.

11-13-2012, 04:06 PM	#3
bichoo New Member Drives: BMW X3 28i Join Date: Sep 2012 Location: Ottawa, Canada Posts: 20 iTrader: (0)	My 369m are at 32/38

11-16-2012, 09:04 AM	#9
egal Enlisted Member Drives: X3 Join Date: Dec 2011 Location: Midwest Posts: 33 iTrader: (0)	Thank you, I will adjust on your recommendations! I did set it to the 40's, it just didn't seem right. I'll move it back to the 30's.