'Check tire pressure' warning
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'Check tire pressure' warning
Snowing today. drove my G37x for a while, then the 'check tire pressure' warning light was on. The tire pressure are all normal in four tires, no ideas why it was on.
Left my car in garage for several hours, stated the car, but that warning is still on.
any ideas?
Left my car in garage for several hours, stated the car, but that warning is still on.
any ideas?
Last edited by manbeing; Oct 29, 2011 at 09:13 PM.
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From: West By'God Virginia
By saying "normal," do you mean all of them vary by no more than 3psi from top of the scale to bottom? Cold weather = TPMS hell... Get accustomed to plenty of false TPMS warnings due to the expansion and contraction of the air in your tires as the temps rise and fall.
Nitrogen fills will help mitigate the issue, but even nitrogen will expand and contract to a certain degree!
Nitrogen fills will help mitigate the issue, but even nitrogen will expand and contract to a certain degree!
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This is normal when daily temperatures drop with the winter coming in. Just re-inflate your tires to slightly above normal and the light will go off after a couple of days. After it turns on, it won't go off instantly. Because the air outside gets colder, the tire pressure in your wheels also drops, hence comes on the light. You can have your dealer re-inflate them and instantly turn off the light, or you can wait a couple of days yourself after re-inflating them. However, this is completely normal. I had the same thing on New Year's eve last year when it was the coldest night of the year in my area.
It's something like "for every 10 degrees Fahrenheit drop, your PSI drops by one unit," therefore, many of us get this issue during the winter time.
And yes, if you use Nitrogen instead of air, it'll help a bit.
It's something like "for every 10 degrees Fahrenheit drop, your PSI drops by one unit," therefore, many of us get this issue during the winter time.
And yes, if you use Nitrogen instead of air, it'll help a bit.
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From: Plainsboro, NJ
Agreed. It is just the expansion and contraction of the air in your tires =D
Nitrogen helping with changes in pressure with temperature is not true. Firstly, Nitrogen is like any other gas and obey's the Ideal Gas Law PV=nRT where pressure of a gas is directly proportional to temperature in Kelvin. Second, the earth's atmosphere is 78% Nitrogen so, filling up your tires with regular air is almost the same as using pure nitrogen (even when they fill your tires with pure nitrogen they only get at most 95% nitrogen content because they can't draw a complete vacuum). The only conceivable reason for nitrogen helping with change in pressure is because of a lower water vapor content in the air in the tires. Since a gas takes up more volume than a liquid or solid, the partial pressure of gaseous water would suddenly decrease when your tires become very cold and the water vapor changes state to liquid water; however, the percentage of water vapor in your tires is generally very low and has little influence over changes in pressure.
The reason why nitrogen in tires took off and became popular was because formula 1 began filling tires with nitrogen as a safety precaution against fires (Vulcanized Rubber, Aluminum, Oxygen, and Activation Energy = Ignited Rocket Fuel). Nitrogen is very stable and non-reactive in the gaseous state and by removing oxygen from the equation it made things just a little bit safer. Formula 1 starts doing it, then everyone else has to as well...
Unless (even if) your are tracking, Nitrogen has very little benefits and is a waste of dough.
Oh i forgot to mention - there is 1 benefit to filling tires with nitrogen - Since nitrogen is non-reactive, it does not oxidize the inner lining of your tires making them last longer. However, these benefits would only be apparent if you used your tires for multiple decades (I'm sure most of us don't do this...). Also, oxygen passively exchanges into your tires since the rubber which comprises your tires is porous and will deteriorate not just the outer portion of your tires but eventually works its way all the way to the nitrogen filling your tires.
Check your pressures regularly (weekly or at least monthly) and keep it up to spec (or whatever you like for your performance needs). Keeps you safe, keeps your car the most fun, and keeps that dang TPMS light off! =D
Nitrogen helping with changes in pressure with temperature is not true. Firstly, Nitrogen is like any other gas and obey's the Ideal Gas Law PV=nRT where pressure of a gas is directly proportional to temperature in Kelvin. Second, the earth's atmosphere is 78% Nitrogen so, filling up your tires with regular air is almost the same as using pure nitrogen (even when they fill your tires with pure nitrogen they only get at most 95% nitrogen content because they can't draw a complete vacuum). The only conceivable reason for nitrogen helping with change in pressure is because of a lower water vapor content in the air in the tires. Since a gas takes up more volume than a liquid or solid, the partial pressure of gaseous water would suddenly decrease when your tires become very cold and the water vapor changes state to liquid water; however, the percentage of water vapor in your tires is generally very low and has little influence over changes in pressure.
The reason why nitrogen in tires took off and became popular was because formula 1 began filling tires with nitrogen as a safety precaution against fires (Vulcanized Rubber, Aluminum, Oxygen, and Activation Energy = Ignited Rocket Fuel). Nitrogen is very stable and non-reactive in the gaseous state and by removing oxygen from the equation it made things just a little bit safer. Formula 1 starts doing it, then everyone else has to as well...
Unless (even if) your are tracking, Nitrogen has very little benefits and is a waste of dough.
Oh i forgot to mention - there is 1 benefit to filling tires with nitrogen - Since nitrogen is non-reactive, it does not oxidize the inner lining of your tires making them last longer. However, these benefits would only be apparent if you used your tires for multiple decades (I'm sure most of us don't do this...). Also, oxygen passively exchanges into your tires since the rubber which comprises your tires is porous and will deteriorate not just the outer portion of your tires but eventually works its way all the way to the nitrogen filling your tires.
Check your pressures regularly (weekly or at least monthly) and keep it up to spec (or whatever you like for your performance needs). Keeps you safe, keeps your car the most fun, and keeps that dang TPMS light off! =D
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From: Where the Sopranos and Saguaros are
Agreed. It is just the expansion and contraction of the air in your tires =D
Nitrogen helping with changes in pressure with temperature is not true. Firstly, Nitrogen is like any other gas and obey's the Ideal Gas Law PV=nRT where pressure of a gas is directly proportional to temperature in Kelvin. Second, the earth's atmosphere is 78% Nitrogen so, filling up your tires with regular air is almost the same as using pure nitrogen (even when they fill your tires with pure nitrogen they only get at most 95% nitrogen content because they can't draw a complete vacuum). The only conceivable reason for nitrogen helping with change in pressure is because of a lower water vapor content in the air in the tires. Since a gas takes up more volume than a liquid or solid, the partial pressure of gaseous water would suddenly decrease when your tires become very cold and the water vapor changes state to liquid water; however, the percentage of water vapor in your tires is generally very low and has little influence over changes in pressure.
The reason why nitrogen in tires took off and became popular was because formula 1 began filling tires with nitrogen as a safety precaution against fires (Vulcanized Rubber, Aluminum, Oxygen, and Activation Energy = Ignited Rocket Fuel). Nitrogen is very stable and non-reactive in the gaseous state and by removing oxygen from the equation it made things just a little bit safer. Formula 1 starts doing it, then everyone else has to as well...
Unless (even if) your are tracking, Nitrogen has very little benefits and is a waste of dough.
Oh i forgot to mention - there is 1 benefit to filling tires with nitrogen - Since nitrogen is non-reactive, it does not oxidize the inner lining of your tires making them last longer. However, these benefits would only be apparent if you used your tires for multiple decades (I'm sure most of us don't do this...). Also, oxygen passively exchanges into your tires since the rubber which comprises your tires is porous and will deteriorate not just the outer portion of your tires but eventually works its way all the way to the nitrogen filling your tires.
Check your pressures regularly (weekly or at least monthly) and keep it up to spec (or whatever you like for your performance needs). Keeps you safe, keeps your car the most fun, and keeps that dang TPMS light off! =D
Nitrogen helping with changes in pressure with temperature is not true. Firstly, Nitrogen is like any other gas and obey's the Ideal Gas Law PV=nRT where pressure of a gas is directly proportional to temperature in Kelvin. Second, the earth's atmosphere is 78% Nitrogen so, filling up your tires with regular air is almost the same as using pure nitrogen (even when they fill your tires with pure nitrogen they only get at most 95% nitrogen content because they can't draw a complete vacuum). The only conceivable reason for nitrogen helping with change in pressure is because of a lower water vapor content in the air in the tires. Since a gas takes up more volume than a liquid or solid, the partial pressure of gaseous water would suddenly decrease when your tires become very cold and the water vapor changes state to liquid water; however, the percentage of water vapor in your tires is generally very low and has little influence over changes in pressure.
The reason why nitrogen in tires took off and became popular was because formula 1 began filling tires with nitrogen as a safety precaution against fires (Vulcanized Rubber, Aluminum, Oxygen, and Activation Energy = Ignited Rocket Fuel). Nitrogen is very stable and non-reactive in the gaseous state and by removing oxygen from the equation it made things just a little bit safer. Formula 1 starts doing it, then everyone else has to as well...
Unless (even if) your are tracking, Nitrogen has very little benefits and is a waste of dough.
Oh i forgot to mention - there is 1 benefit to filling tires with nitrogen - Since nitrogen is non-reactive, it does not oxidize the inner lining of your tires making them last longer. However, these benefits would only be apparent if you used your tires for multiple decades (I'm sure most of us don't do this...). Also, oxygen passively exchanges into your tires since the rubber which comprises your tires is porous and will deteriorate not just the outer portion of your tires but eventually works its way all the way to the nitrogen filling your tires.
Check your pressures regularly (weekly or at least monthly) and keep it up to spec (or whatever you like for your performance needs). Keeps you safe, keeps your car the most fun, and keeps that dang TPMS light off! =D
Why would I pay for nitrogen? What would be the benefit? Living on the east coast with an AWD car, I would want to replace the tires anyway after a few years to ensure winter driving is as optimal as can be without snows.
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Agreed. It is just the expansion and contraction of the air in your tires =D
Nitrogen helping with changes in pressure with temperature is not true. Firstly, Nitrogen is like any other gas and obey's the Ideal Gas Law PV=nRT where pressure of a gas is directly proportional to temperature in Kelvin. Second, the earth's atmosphere is 78% Nitrogen so, filling up your tires with regular air is almost the same as using pure nitrogen (even when they fill your tires with pure nitrogen they only get at most 95% nitrogen content because they can't draw a complete vacuum). The only conceivable reason for nitrogen helping with change in pressure is because of a lower water vapor content in the air in the tires. Since a gas takes up more volume than a liquid or solid, the partial pressure of gaseous water would suddenly decrease when your tires become very cold and the water vapor changes state to liquid water; however, the percentage of water vapor in your tires is generally very low and has little influence over changes in pressure.
The reason why nitrogen in tires took off and became popular was because formula 1 began filling tires with nitrogen as a safety precaution against fires (Vulcanized Rubber, Aluminum, Oxygen, and Activation Energy = Ignited Rocket Fuel). Nitrogen is very stable and non-reactive in the gaseous state and by removing oxygen from the equation it made things just a little bit safer. Formula 1 starts doing it, then everyone else has to as well...
Unless (even if) your are tracking, Nitrogen has very little benefits and is a waste of dough.
Oh i forgot to mention - there is 1 benefit to filling tires with nitrogen - Since nitrogen is non-reactive, it does not oxidize the inner lining of your tires making them last longer. However, these benefits would only be apparent if you used your tires for multiple decades (I'm sure most of us don't do this...). Also, oxygen passively exchanges into your tires since the rubber which comprises your tires is porous and will deteriorate not just the outer portion of your tires but eventually works its way all the way to the nitrogen filling your tires.
Check your pressures regularly (weekly or at least monthly) and keep it up to spec (or whatever you like for your performance needs). Keeps you safe, keeps your car the most fun, and keeps that dang TPMS light off! =D
Nitrogen helping with changes in pressure with temperature is not true. Firstly, Nitrogen is like any other gas and obey's the Ideal Gas Law PV=nRT where pressure of a gas is directly proportional to temperature in Kelvin. Second, the earth's atmosphere is 78% Nitrogen so, filling up your tires with regular air is almost the same as using pure nitrogen (even when they fill your tires with pure nitrogen they only get at most 95% nitrogen content because they can't draw a complete vacuum). The only conceivable reason for nitrogen helping with change in pressure is because of a lower water vapor content in the air in the tires. Since a gas takes up more volume than a liquid or solid, the partial pressure of gaseous water would suddenly decrease when your tires become very cold and the water vapor changes state to liquid water; however, the percentage of water vapor in your tires is generally very low and has little influence over changes in pressure.
The reason why nitrogen in tires took off and became popular was because formula 1 began filling tires with nitrogen as a safety precaution against fires (Vulcanized Rubber, Aluminum, Oxygen, and Activation Energy = Ignited Rocket Fuel). Nitrogen is very stable and non-reactive in the gaseous state and by removing oxygen from the equation it made things just a little bit safer. Formula 1 starts doing it, then everyone else has to as well...
Unless (even if) your are tracking, Nitrogen has very little benefits and is a waste of dough.
Oh i forgot to mention - there is 1 benefit to filling tires with nitrogen - Since nitrogen is non-reactive, it does not oxidize the inner lining of your tires making them last longer. However, these benefits would only be apparent if you used your tires for multiple decades (I'm sure most of us don't do this...). Also, oxygen passively exchanges into your tires since the rubber which comprises your tires is porous and will deteriorate not just the outer portion of your tires but eventually works its way all the way to the nitrogen filling your tires.
Check your pressures regularly (weekly or at least monthly) and keep it up to spec (or whatever you like for your performance needs). Keeps you safe, keeps your car the most fun, and keeps that dang TPMS light off! =D
I agree with everything here, except one thing. "Since nitrogen is non-reactive, it does not oxidize the inner lining of your tires making them last longer." Actually, it won't oxidize anything because it's not oxygen; not because it's considered non-reactive. We've been able to make nitrogen react with several other elements under the right conditions. Nothing you'd ever see in a tire, or anywhere else in the real world, but it's not as noble (non-reactive) as we once thought.
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From: Plainsboro, NJ
It's nice to see someone else not obsessed with the mystical nitrogen filled tires.
I agree with everything here, except one thing. "Since nitrogen is non-reactive, it does not oxidize the inner lining of your tires making them last longer." Actually, it won't oxidize anything because it's not oxygen; not because it's considered non-reactive. We've been able to make nitrogen react with several other elements under the right conditions. Nothing you'd ever see in a tire, or anywhere else in the real world, but it's not as noble (non-reactive) as we once thought.
I agree with everything here, except one thing. "Since nitrogen is non-reactive, it does not oxidize the inner lining of your tires making them last longer." Actually, it won't oxidize anything because it's not oxygen; not because it's considered non-reactive. We've been able to make nitrogen react with several other elements under the right conditions. Nothing you'd ever see in a tire, or anywhere else in the real world, but it's not as noble (non-reactive) as we once thought.
I my wording clearly does not state what I meant ><
I meant that nitrogen is very stable whereas oxygen is highly reactive. (It's not as though Nitrogen is a noble gas LOL) Removing oxygen and specifically O3(ozone) from contacting the vulcanized rubber means it will remain in it's original state longer and not deteriorate from oxidation.
Thanks for catching that!
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From: Waterloo, Ont.
^ So...how do I remove and prevent the oxygen and specifically O3(ozone) from contacting the vulcanized rubber on the exterior of the tire? 
(while the tire is being used for it's intended purpose)
(while the tire is being used for it's intended purpose)
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From: West By'God Virginia
Agreed. It is just the expansion and contraction of the air in your tires =D
Nitrogen helping with changes in pressure with temperature is not true. Firstly, Nitrogen is like any other gas and obey's the Ideal Gas Law PV=nRT where pressure of a gas is directly proportional to temperature in Kelvin. Second, the earth's atmosphere is 78% Nitrogen so, filling up your tires with regular air is almost the same as using pure nitrogen (even when they fill your tires with pure nitrogen they only get at most 95% nitrogen content because they can't draw a complete vacuum). The only conceivable reason for nitrogen helping with change in pressure is because of a lower water vapor content in the air in the tires. Since a gas takes up more volume than a liquid or solid, the partial pressure of gaseous water would suddenly decrease when your tires become very cold and the water vapor changes state to liquid water; however, the percentage of water vapor in your tires is generally very low and has little influence over changes in pressure.
The reason why nitrogen in tires took off and became popular was because formula 1 began filling tires with nitrogen as a safety precaution against fires (Vulcanized Rubber, Aluminum, Oxygen, and Activation Energy = Ignited Rocket Fuel). Nitrogen is very stable and non-reactive in the gaseous state and by removing oxygen from the equation it made things just a little bit safer. Formula 1 starts doing it, then everyone else has to as well...
Unless (even if) your are tracking, Nitrogen has very little benefits and is a waste of dough.
Oh i forgot to mention - there is 1 benefit to filling tires with nitrogen - Since nitrogen is non-reactive, it does not oxidize the inner lining of your tires making them last longer. However, these benefits would only be apparent if you used your tires for multiple decades (I'm sure most of us don't do this...). Also, oxygen passively exchanges into your tires since the rubber which comprises your tires is porous and will deteriorate not just the outer portion of your tires but eventually works its way all the way to the nitrogen filling your tires.
Check your pressures regularly (weekly or at least monthly) and keep it up to spec (or whatever you like for your performance needs). Keeps you safe, keeps your car the most fun, and keeps that dang TPMS light off! =D
Nitrogen helping with changes in pressure with temperature is not true. Firstly, Nitrogen is like any other gas and obey's the Ideal Gas Law PV=nRT where pressure of a gas is directly proportional to temperature in Kelvin. Second, the earth's atmosphere is 78% Nitrogen so, filling up your tires with regular air is almost the same as using pure nitrogen (even when they fill your tires with pure nitrogen they only get at most 95% nitrogen content because they can't draw a complete vacuum). The only conceivable reason for nitrogen helping with change in pressure is because of a lower water vapor content in the air in the tires. Since a gas takes up more volume than a liquid or solid, the partial pressure of gaseous water would suddenly decrease when your tires become very cold and the water vapor changes state to liquid water; however, the percentage of water vapor in your tires is generally very low and has little influence over changes in pressure.
The reason why nitrogen in tires took off and became popular was because formula 1 began filling tires with nitrogen as a safety precaution against fires (Vulcanized Rubber, Aluminum, Oxygen, and Activation Energy = Ignited Rocket Fuel). Nitrogen is very stable and non-reactive in the gaseous state and by removing oxygen from the equation it made things just a little bit safer. Formula 1 starts doing it, then everyone else has to as well...
Unless (even if) your are tracking, Nitrogen has very little benefits and is a waste of dough.
Oh i forgot to mention - there is 1 benefit to filling tires with nitrogen - Since nitrogen is non-reactive, it does not oxidize the inner lining of your tires making them last longer. However, these benefits would only be apparent if you used your tires for multiple decades (I'm sure most of us don't do this...). Also, oxygen passively exchanges into your tires since the rubber which comprises your tires is porous and will deteriorate not just the outer portion of your tires but eventually works its way all the way to the nitrogen filling your tires.
Check your pressures regularly (weekly or at least monthly) and keep it up to spec (or whatever you like for your performance needs). Keeps you safe, keeps your car the most fun, and keeps that dang TPMS light off! =D
Had my statement been extrapolated further, it would have read: "Due to the decrease in water vapor in nitrogen filled tires, the expansion and contraction is more predictable and less varied than atmospheric air fills. When TPMS systems are defined to throw an alert when the tire with the least pressure is 3psi under the tire with me most pressure, this reduced variance can aid in reducing temperature-related warnings."
I never said it would eliminate them, just aid in reducing them.
Also, nitrogen will permeate through rubber less than oxygen, so your tire pressures will stay more consistent, longer between fills (1/3 the speed of atmospheric air). I can quote a variety of sites (Including Consumer Reports and Tire Rack) who will back this statement, as well as my previous one. In fact, Tire Rack are rather adamant in not recommending nitrogen from a financial perspective, but if you can get it at a low cost/free, they'll concede that it can help TPMS and pressure loss to a certain degree.
I know of a number of local Infiniti dealers who offer free nitrogen fills, as well as tire shops who will fill them and keep them topped off as long as you buy your tires there. Even $5/tire would be marginally worth it, but the $10/tire people are smoking crack!
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