Tyre Pressure

dying4004 · 08-13-2018, 05:36 AM

guys

my bmw 323i 2010 got the below:

front - 225x40x18
rear - 255x35x18

what should be the tyre pressure?

they are run flat btw.

cheers

Ken Oath · 08-13-2018, 08:03 AM

The load index and speed ratings are also needed to determine the information using a load inflation table.

Otherwise use the tyre placard located on the driver's side door frame.

RFT or non-RFT does not determine inflation.

PerthBMW · 08-13-2018, 11:03 PM

I have same tyres and do 250 front, 300 rear...

dying4004 · 08-14-2018, 03:13 AM

Quote:

Originally Posted by PerthBMW

I have same tyres and do 250 front, 300 rear...

thanks man.

that means around 37 psi at the front and 44 psi at the rear, yea?

e36mmm · 08-14-2018, 04:19 AM

Dude that's way too high. Try 37 fronts, 38 rears. Only load rear to 41 psi when carrying full load..

dying4004 · 08-15-2018, 05:07 AM

front 34 and rear 40?? or front 34 and rear 38?

08-13-2018, 05:36 AM	#1
dying4004 Private First Class 10 Rep 149 Posts Drives: BMW 323i 2010 Join Date: May 2015 Location: Sydney iTrader: (0)	Tyre Pressure guys my bmw 323i 2010 got the below: front - 225x40x18 rear - 255x35x18 what should be the tyre pressure? they are run flat btw. cheers
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08-13-2018, 08:03 AM	#2
Ken Oath Lieutenant 114 Rep 410 Posts Drives: 2012 E92 330d Join Date: Feb 2017 Location: Perth, Australia iTrader: (0)	The load index and speed ratings are also needed to determine the information using a load inflation table. Otherwise use the tyre placard located on the driver's side door frame. RFT or non-RFT does not determine inflation.
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08-13-2018, 11:03 PM	#3
PerthBMW Captain 219 Rep 690 Posts Drives: 2019 X3 M40i Join Date: Jan 2011 Location: Perth Western Australia iTrader: (0) Garage List 2019 BMW X3 M40i [0.00]	I have same tyres and do 250 front, 300 rear...
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08-14-2018, 04:19 AM	#5
e36mmm Major 189 Rep 1,178 Posts Drives: 335i M Sport Join Date: Dec 2009 Location: Australia iTrader: (0)	Dude that's way too high. Try 37 fronts, 38 rears. Only load rear to 41 psi when carrying full load..
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08-15-2018, 05:07 AM	#6
dying4004 Private First Class 10 Rep 149 Posts Drives: BMW 323i 2010 Join Date: May 2015 Location: Sydney iTrader: (0)	front 34 and rear 40?? or front 34 and rear 38?
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