Basic Tire Pressure Question

psaav · 03-24-2021, 12:03 PM

My '21 M340 came with 19" 792M Michelin PS4 staggered set up. The factory PSI is set at 41, but the recommended pressure on iDrive is 37. Should I reduce the pressure or leave it as is?

RedKloud · 03-24-2021, 12:11 PM

The manual says 38 PSI all around.

pneumodoc · 03-24-2021, 12:40 PM

I believe dealerships usually have psi set high to prevent wear while car sits idle for days/weeks. Reduce pressure to the actual recommended level.

psaav · 03-24-2021, 01:09 PM

Ok, thanks. The door badge does say 38 PSI so I'll reduce it.

03-24-2021, 12:03 PM	#1
psaav Private First Class 97 Rep 147 Posts Drives: M340 xDrive Join Date: Dec 2020 Location: TN iTrader: (0)	Basic Tire Pressure Question My '21 M340 came with 19" 792M Michelin PS4 staggered set up. The factory PSI is set at 41, but the recommended pressure on iDrive is 37. Should I reduce the pressure or leave it as is?
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03-24-2021, 12:11 PM	#2
RedKloud Major 737 Rep 1,261 Posts Drives: BMW i4 M50 Join Date: Jan 2016 Location: Portland, OR iTrader: (0)	The manual says 38 PSI all around.
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03-24-2021, 12:40 PM	#3
pneumodoc Lieutenant 235 Rep 424 Posts Drives: G20, G01 Join Date: Apr 2019 Location: Seattle iTrader: (0)	I believe dealerships usually have psi set high to prevent wear while car sits idle for days/weeks. Reduce pressure to the actual recommended level.
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03-24-2021, 01:09 PM	#4
psaav Private First Class 97 Rep 147 Posts Drives: M340 xDrive Join Date: Dec 2020 Location: TN iTrader: (0)	Ok, thanks. The door badge does say 38 PSI so I'll reduce it.
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