Winter Setup Tire Pressure

TheCaptain · 11-17-2015, 01:52 PM

I have a question about tire pressure of winter tires. My winter setup is 225/40 square on 18" rims, which is 20mm narrower in the rear compared to the stock (summer) setup. Do any of you adjust the pressure for the difference in tire width? There's plenty of information online about tire pressure and cold weather, but I haven't found anything that specifically addresses what the pressure should be when you change to a narrower width.

FactorX81 · 11-17-2015, 02:11 PM

I just use door pressure for street regardless of tire size or season. Maybe someone else has strong opinions otherwise.

mackeroni · 11-18-2015, 01:31 AM

My 135i's winter tires are 205/50-17. I use 33psi front and 36psi rear under 100 mph. For driving over 100 mph, I increase pressures to 36psi front and 39psi rear. Yeah, sometimes I am in a hurry to get to Grandma's house.

"Over the river and through the woods..."

chris82 · 11-18-2015, 11:35 AM

Quote:

Originally Posted by mackeroni

My 135i's winter tires are 205/50-17. I use 33psi front and 36psi rear under 100 mph. For driving over 100 mph, I increase pressures to 36psi front and 39psi rear. Yeah, sometimes I am in a hurry to get to Grandma's house.

"Over the river and through the woods..."

quite literally if you go too fast

2PUTT · 11-18-2015, 01:14 PM

40psi to compensate for the winter potholes.

pj.rodriguez · 11-20-2015, 07:22 AM

Quote:

Originally Posted by mackeroni

My 135i's winter tires are 205/50-17. I use 33psi front and 36psi rear under 100 mph. For driving over 100 mph, I increase pressures to 36psi front and 39psi rear. Yeah, sometimes I am in a hurry to get to Grandma's house.

"Over the river and through the woods..."

33F 36R. I have the same tire size as the quoted member.

MightyMouseTech · 11-20-2015, 07:56 AM

Have really played around with pressures with my Hakka 2, 205/50/17. They seem to like 35/35. Different tires will be different pressures.

IEDEI · 11-20-2015, 09:40 AM

Quote:

Originally Posted by MightyMouseTech

Have really played around with pressures with my Hakka 2, 205/50/17. They seem to like 35/35. Different tires will be different pressures.

i run the same on my Hakka R2s....

11-17-2015, 01:52 PM	#1
TheCaptain Second Lieutenant 65 Rep 275 Posts Drives: m235i x 'vert Join Date: Nov 2013 Location: NY iTrader: (0)	Winter Setup Tire Pressure I have a question about tire pressure of winter tires. My winter setup is 225/40 square on 18" rims, which is 20mm narrower in the rear compared to the stock (summer) setup. Do any of you adjust the pressure for the difference in tire width? There's plenty of information online about tire pressure and cold weather, but I haven't found anything that specifically addresses what the pressure should be when you change to a narrower width.
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11-17-2015, 02:11 PM	#2
FactorX81 First Lieutenant 29 Rep 363 Posts Drives: 2010 135i, 2014 Ford Escape Ti Join Date: Nov 2009 Location: NJ iTrader: (0)	I just use door pressure for street regardless of tire size or season. Maybe someone else has strong opinions otherwise.
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11-18-2015, 01:31 AM	#3
mackeroni Former Opel GT Pilot 327 Rep 771 Posts Drives: 2011 135i, AW, CR, 6MT Join Date: Dec 2010 Location: Canton, OH USA iTrader: (0)	My 135i's winter tires are 205/50-17. I use 33psi front and 36psi rear under 100 mph. For driving over 100 mph, I increase pressures to 36psi front and 39psi rear. Yeah, sometimes I am in a hurry to get to Grandma's house. "Over the river and through the woods..." __________________ So, that's it. I am doomed. There is no patch, no methadone, no substitute. Curse you BMW. Curse you and your seamless power delivery. Curse the incredible sense of road feel. Curse the comfort, the luxury, the envious looks from the masses. I am... hopelessly addicted.
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11-18-2015, 01:14 PM	#5
2PUTT Captain 513 Rep 943 Posts Drives: F87 Join Date: Nov 2014 Location: Ubiquitous iTrader: (5)	40psi to compensate for the winter potholes.
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11-20-2015, 07:56 AM	#7
MightyMouseTech Major General 4338 Rep 6,196 Posts Drives: 13 135i 6MT LeMans Blue MSport Join Date: Feb 2013 Location: Ottawa, Canada iTrader: (0)	Have really played around with pressures with my Hakka 2, 205/50/17. They seem to like 35/35. Different tires will be different pressures.
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