What pressure shall I be putting in tires under different weather conditions?

[artisticcheese]

I'm confused about tire pressure in my Genesis 2015. Door says it shall be 33 and it's 33 at 100F here in Texas during summer time but today it was 20F and it's 26psi and I have "low tire pressure" warning. What am I supposed to do?

 

[dareckibmw]

Always check the tire pressure when tires are COLD. Since they are cold now, inflate them to 33psi (or a few psi above) problem solved.

 

[artisticcheese]

The problem is that due to weather fluctuation on the same day whatever pressure you will put in at 20 F will not be the same one when it will 75F on the same day 8 hours later. Even without driving car at all.

 

[jsmit86]

I'm confused about tire pressure in my Genesis 2015. Door says it shall be 33 and it's 33 at 100F here in Texas during summer time but today it was 20F and it's 26psi and I have "low tire pressure" warning. What am I supposed to do?

This is normal. What to do? Put more air in there! ;-)
Here in Chicagoland, we go from High 90's in the Summer, to -15 to -20 in in the Winter. In the fall, as the temps get down in the 40s, I usually fill to about 35-36 cold. When we get down around 0, that will be about 33 psi cold. As we transition to summer, I also adjust to stay around 35 cold.

On my G2, I've been getting little if any loss. When I had my Azera, it was normal to lose a few pounds every few months. Probably due to the rims.

 

[allan]

Check the tire pressure every couple of weeks - especially as the seasons are changing. Check when they are cold. The recommended pressure is 33 psi under all circumstances.

 

[artisticcheese]

All of you not getting it. This variance in temperature was in single day! We have days in Winter here where temperature during daytime can be in 70s and night time in teens.

 

[jsmit86]

All of you not getting it. This variance in temperature was in single day! We have days in Winter here where temperature during daytime can be in 70s and night time in teens.

Exactly! I fully understand that "33 PSI Cold" recommendation. But with the temp variances here, it's better to go a bit over, ~35 PSI or so, and still be at 33 Cold when it's 0 degrees outside. A couple of pounds over won't hurt anything. I really don't even notice the ride being rougher.

 

[PaFromFL]

It also helps to keep moisture out of the air in the tires. This is one advantage of pure nitrogen.

 

[dougmcp]

Tire pressures drop about 1 PSI for every 10 degree drop in temperature. Set the pressures monthly when it's cold, if it heats up later in the day it will be fine. IMO nitrogen is a waste of time and money. Yes the molecules are slightly larger and the air loss over time is less but they can never purge them to get 100% nitrogen and it will still suffer from pressure loss when the temperature drops. Monthly checks and a good tire pressure gauge is the best thing you can do.

 

[Midnightsun]

Temps can get close to 100 in the summer and down to -40 in the winter where I live. You cannot adjust perfectly all the time but winter for me says around 3-4 psi over the rated door jamb pressure assuming the vehicle is in my heated garage when doing so. Never tried and do not want to fill my tires when it's -40 out.

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[kn5owa]

IMO nitrogen is a waste of time and money. Yes the molecules are slightly larger and the air loss over time is less but they can never purge them to get 100% nitrogen and it will still suffer from pressure loss when the temperature drops. Monthly checks and a good tire pressure gauge is the best thing you can do.

Attaining anywhere close to 100% nitrogen would be an impossibility.

But, it can be a nice scam - new car dealers around here used to list nitrogen as an "add-on" and then add as much as $600 to the price tag - along with the non-existent mud flaps.

 

[silberma]

Air is already composed of 78% nitrogen so the benefits are somewhat limited,

 

[Midnightsun]

I wonder how well they could trick people into thinking how great nitrogen is if they said they will increase the nitrogen content of your tires by 10% because that is all they are actually doing IF they take them time to purge properly which by the way most do not even do.

One of my best friends owns a tire shop. He was all gaga about the Nitrogen thing when it was first introduced. Went to special training classes and bought an expensive machine and promoted it heavily. I never bought in and never believed him. Today when we talk about nitrogen he just kinda rolls his eyes and chalks his mistake up as a learning lesson in life.

 

[PaFromFL]

The goal is to keep water out of the tire. Nitrogen gas is dry, while not all air compressors filter out much water. If the gas in the tire remains in the gaseous phase, the pressure (added to atmospheric pressure) is proportional to the temperature relative to absolute zero (-459.67 degrees Fahrenheit = -273.15 C). Water partially condenses and evaporates causing a much greater pressure change with temperature. Also, the combination of water and pressurized oxygen promotes corrosion. The temperature variation on the FL coast is small enough that I just fill my own tires with air.

 

[goochylittlepig]

Tangential question: I have the 2016 3.8 RWD with the original tires (not the 2015 ones that had the issues). I feel like my tires suck in regards to traction, especially during wet weather. The aftermarket tires I bought for my old Nissan Altima were awesome for this, and I've been kind of disappointed in the Genesis tires. Has anyone else had a similar experience? Is it the low profile style, or maybe my car has way more power so I'm driving it faster than my last car? We're supposed to be getting our first snow of the season tomorrow, and I'm feeling less than confident.

 

[Mark_888]

I wonder how well they could trick people into thinking how great nitrogen is if they said they will increase the nitrogen content of your tires by 10% because that is all they are actually doing IF they take them time to purge properly which by the way most do not even do.

One of my best friends owns a tire shop. He was all gaga about the Nitrogen thing when it was first introduced. Went to special training classes and bought an expensive machine and promoted it heavily. I never bought in and never believed him. Today when we talk about nitrogen he just kinda rolls his eyes and chalks his mistake up as a learning lesson in life.

My experience with nitrogen (that I get free at Costco Tires) is that the tires leak a lot less than with regular air (which needed refill at least once a month with regular air).

Whether or not nitrogen is of benefit to a tire store owner, is a different subject, but if done properly I think nitrogen is good for consumers if they don't pay too much for it.

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Attaining anywhere close to 100% nitrogen would be an impossibility.

But, it can be a nice scam - new car dealers around here used to list nitrogen as an "add-on" and then add as much as $600 to the price tag - along with the non-existent mud flaps.

My guess is that the dealers never even used nitrogen.

Costco Tires uses nitrogen during installation, free 7500 mile rotations, and whenever I drive up along side the bays for a quick top-off (done by a tech). My tires with nitrogen seem to leak less than with regular air.

You are correct that 100% nitrogen is not possible (unless the tire is filled in a vacuum chamber), but even 95% nitrogen seems to help keeping them inflated at proper PSI longer than regular air.

 

[jarred52]

Your old Altima has front wheel drive with more of its weight over the front wheels. This will usually give better control in poor traction conditions like rain and snow. As you indicated, your increased speed will also be a factor.

 

[silberma]

This subject is getting out of hand. You pressure needs to be the rated pressure for the ambient temperatute where the car is operated. You will need to adjust it seasonaly as needed, period. I overfill my tires by one psi so that I do not need to add air every month.

 

[artisticcheese]

What are you people don't understanding here? I have high for the day of 75 and low of 24. Tell me which pressure I can put in the morning so I can drive in the morning fine and still come back home at 75 and not be overinflated.