Inflation question (after changing wheel and tire size)

jeffthx · 10-02-2018, 03:14 PM

I recently purchased a '15 435iX F33/CV.

I currently have OEM 400M wheels with the standard/square 225/45/18 P7 run-flats. I've been following the inflation guidelines of 32 front and 35-39 rear. I will soon be changing the wheels to a winter setup that I purchased, which is staggered 18" 397 wheels and Blizzaks (255/40/18 rear and 225/45/18 front). Is there any different inflation guideline for this type of setup?

Next question: Between now and next spring, I'll be changing out my summer wheels/tires. Instead of the 400M/P7 setup, next year I'll be running staggered 19s with (most likely) Pilot Sport 4S tires (265/35/19x9.5 rears, 235/40/19x8.5 front). Again, is there a different inflation guideline for this setup?

I'm just not sure if I should continue to go with the 32/35-39 recommendation regardless of the wheel/tire combo, or if the inflation should change based on the winter or the (new) summer sets I'll be running.

Thanks,
Jeff

jeffthx · 10-14-2018, 10:23 PM

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10-02-2018, 03:14 PM	#1
jeffthx Private 41 Rep 91 Posts Drives: 2015 435i X-drive M-Sport Conv Join Date: Jun 2018 Location: Twin Cities iTrader: (1)	Inflation question (after changing wheel and tire size) I recently purchased a '15 435iX F33/CV. I currently have OEM 400M wheels with the standard/square 225/45/18 P7 run-flats. I've been following the inflation guidelines of 32 front and 35-39 rear. I will soon be changing the wheels to a winter setup that I purchased, which is staggered 18" 397 wheels and Blizzaks (255/40/18 rear and 225/45/18 front). Is there any different inflation guideline for this type of setup? Next question: Between now and next spring, I'll be changing out my summer wheels/tires. Instead of the 400M/P7 setup, next year I'll be running staggered 19s with (most likely) Pilot Sport 4S tires (265/35/19x9.5 rears, 235/40/19x8.5 front). Again, is there a different inflation guideline for this setup? I'm just not sure if I should continue to go with the 32/35-39 recommendation regardless of the wheel/tire combo, or if the inflation should change based on the winter or the (new) summer sets I'll be running. Thanks, Jeff
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10-14-2018, 10:23 PM	#2
jeffthx Private 41 Rep 91 Posts Drives: 2015 435i X-drive M-Sport Conv Join Date: Jun 2018 Location: Twin Cities iTrader: (1)	?
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