Tire pressure adjustments for outside temps.

[1Jetpilot]

Why don't someone just tell us how to use the chart if the placarded tire PSI is 38 and your garage temp is 20? I get 40 PSI

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[Runaway Tractor]

I have an amazing idea that might be simpler than referring to a chart and doing math. Ready for it?
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Put air in the tire if it's low.

 

[Firn]

Why don't someone just tell us how to use the chart if the placarded tire PSI is 38 and your garage temp is 20? I get 40 PSI

I did

 

[inchman254]

I use 1 PSI per 10F difference between garage and outside. The actual temp of your garage doesn't matter... Only the difference.

"Cold" tire pressure means in the driving environment.

 

[RickLightning]

Unless you heat or cool your garage, this is totally unnecessary. Let's say that I check my tires at 8AM. Garage is 30 degrees. Outside is 20 degrees. I do the math, and fill my tires.

Now, I go for a drive at 2PM. Temp has risen to 50 degrees! Crap, I pull back in the garage and lower my tire pressure....

I do my tires on the first Saturday of each month. In the garage, without the sun hitting them. The only adjustment I make is going a pound or two higher as winter enters, and a pound or so lower as Spring comes.

With the inaccuracy of tire gauges, the reality is that you are plus or minus 2 to 4 pounds anyway.

 

[tubby]

This looks to be getting a bit too technical, but I am entertained with the discussion. For some reason, I've owned the Lightning for over 2 years and have touched a tire...and we have large temp changes here. Maybe Ford did when I took it in for it's 1st 10K mi service/rotate.

 

[inchman254]

This looks to be getting a bit too technical, but I am entertained with the discussion. For some reason, I've owned the Lightning for over 2 years and have touched a tire...and we have large temp changes here. Maybe Ford did when I took it in for it's 1st 10K mi service/rotate.

Tire pressure can have a sigificant effect on range in both EVs and ICE vehicles.

Many people who own EVs like/want/need to get the best mileage possible. That is clearly not your case. "Bragging" that you don't care and that you are entertained (find it humorous that some people do care) lends nothing to the discussion.

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