Tire pressure for winter storage? -40 C*

[Monopoly]

Out of curiosity, what does the tire pressure go down to during the coldest times during storage at that temp?

Never checked. Never had any flat spots on my tires in the spring doing it this way.

Depending how far North you are in Ontario it could get -40C. I've seen -35 just North of Toronto.

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[Shifting_Gears]

Build a bonfire under each tire. By my math, it’s cold enough the tires will stay a balmy 70*.

 

[L8APEX]

Modern radial tires do not flat spot. There is no point putting it on jacks stands either. If you are concerned about the tire pressure dropping, just refill it lol

Do you think the dealerships that let the cars sit out for months during the winter do any sort of prep? You will be fine.

 

[Monopoly]

Modern radial tires do not flat spot. There is no point putting it on jacks stands either. If you are concerned about the tire pressure dropping, just refill it lol

Do you think the dealerships that let the cars sit out for months during the winter do any sort of prep? You will be fine.

I've seen our lovely infamous PZeros do this on a coworkers Challenger. Not sure about Michelin PS4S's or better tires do it.

 

[Andy13186]

If you have summer tires id just keep them and the wheels stored indoors if it was getting to -40..

 

[Shifting_Gears]

I’d be more concerned about the prolonged cold causing cracking in that type of rubber compound.

Summer tires are meant for summer heat. Sure you can run them through a mild winter but we all know that means poor traction.

 

[oldirtysturdy]

-40 C?? That can’t be right. Did you mean -40 F? That’s some serious cold.

It's the same at -40

 

[69mach1-395]

PV=nRT...it's the law!
The ideal gas law, that is. Assuming V, n and R are constant, pressure varies with temp. I would just check P a few times and adjust it if needed. This will also help find if there is a leak, need to keep n constant, lol
https://en.wikipedia.org/wiki/Ideal_gas_law

 

[Qcman17]

I usually bump my tires up about 5 psi when I store my cars. I've never had any flat spot issues or cracking even when I had summer only P-Zero's on my Camaro SS before the GT. I put vinyl tarps on the concrete of my garage floor to keep the moisture away from the bottom of the car & square pieces of plywood under each wheel. OP it will be fine. And only ambient temperature is "felt" by a car wind chill is not a factor for them.

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