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Showgear

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Hey everyone, just found this forum, figured I would drop a line and say hello, thx for having me. Iv been a proud owner of a Telluride for approximately 1 Month. Of course my experience is giving to me by my wife, she loves it. So I'm happy with that fact. I do have a question about the tires, I've noticed a green tire stem cap. Does that color indicate something other than air goes in tire? Also, tire says never exceed 40 psi. But the digital display on dash reads 50 psi. I purchased new from dealership. Am I missing something? Input on both would be sweet!!
 
Hey everyone, just found this forum, figured I would drop a line and say hello, thx for having me. Iv been a proud owner of a Telluride for approximately 1 Month. Of course my experience is giving to me by my wife, she loves it. So I'm happy with that fact. I do have a question about the tires, I've noticed a green tire stem cap. Does that color indicate something other than air goes in tire? Also, tire says never exceed 40 psi. But the digital display on dash reads 50 psi. I purchased new from dealership. Am I missing something? Input on both would be sweet!!

Green cap doesn’t mean anything, just put in air. It comes with overly high tire pressure from the factory. Take sim air out. I think it’s says to put about 32 lbs. Double check on the inside of the front door frame.
 
Green cap doesn’t mean anything, just put in air. It comes with overly high tire pressure from the factory. Take sim air out. I think it’s says to put about 32 lbs. Double check on the inside of the front door frame.
Thx for your fast response. Have a good evening.
 
Green stems sometimes indicate nitrogen filled tires. Might want to read the owners manual or ask your dealer
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Hey everyone, just found this forum, figured I would drop a line and say hello, thx for having me. Iv been a proud owner of a Telluride for approximately 1 Month. Of course my experience is giving to me by my wife, she loves it. So I'm happy with that fact. I do have a question about the tires, I've noticed a green tire stem cap. Does that color indicate something other than air goes in tire? Also, tire says never exceed 40 psi. But the digital display on dash reads 50 psi. I purchased new from dealership. Am I missing something? Input on both would be sweet!!
Nitrogen filled tires.
 
Hey everyone, just found this forum, figured I would drop a line and say hello, thx for having me. Iv been a proud owner of a Telluride for approximately 1 Month. Of course my experience is giving to me by my wife, she loves it. So I'm happy with that fact. I do have a question about the tires, I've noticed a green tire stem cap.
Hey everyone, just found this forum, figured I would drop a line and say hello, thx for having me. Iv been a proud owner of a Telluride for approximately 1 Month. Of course my experience is giving to me by my wife, she loves it. So I'm happy with that fact. I do have a question about the tires, I've noticed a green tire stem cap. Does that color indicate something other than air goes in tire? Also, tire says never exceed 40 psi. But the digital display on dash reads 50 psi. I purchased new from dealership. Am I missing something? Input on both would be sweet!!
Does that color indicate something other than air goes in tire? Also, tire says never exceed 40 psi. But the digital display on dash reads 50 psi. I purchased new from dealership. Am I missing something? Input on both would be sweet!!
Green caps are always used for a nitrogen fill. That keeps the tires at a steadier pressure whether driving or sitting. It’s very likely that you paid for it with your purchase! 🤓. As for the pressure, ALWAYS follow the guides posted inside the drivers door frame. 50 psi is way too high, regardless of who filled it. When you drop it the 32-35psi level the Telly will also be significantly more quiet on the road. Enjoy the new toy!
 
Ok, sorry,...mistaken about green cap. I assumed it was from the factory but I guess the dealer must have filled as an extra option.

The bigger point is the tires are way over filled at 50 psi. Many people reported that their vehicles came over filled from the factory, including mine.

Yes, nitrogen is stable so it shouldn’t increase as tire temperature increase, but you should take some air out.
 
Green caps are always used for a nitrogen fill. That keeps the tires at a steadier pressure whether driving or sitting. It’s very likely that you paid for it with your purchase! 🤓. As for the pressure, ALWAYS follow the guides posted inside the drivers door frame. 50 psi is way too high, regardless of who filled it. When you drop it the 32-35psi level the Telly will also be significantly more quiet on the road. Enjoy the new toy!
Thx for response, if pressure does go low is it ok to mix air with gas,
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Thx for response, if pressure does go low is it ok to mix air with gas,
Yes, you can add air with no harm. Realize, though, that the more air that you add the less effective the nitrogen will be.
If you can, have a dealer top off the tires with nitrogen. Costco also does nitrogen topoffs, but sometimes they won’t if they realize they didn’t sell you the tires...
 
Nitrogen is a joke from my personal perspective.

The perceived benefit does not outweigh the the cons (lack of availability / cost of obtaining and keeping a specialized gas beyond normal air).

If you live somewhere with consistent temperature year round nitrogen might be OK. However, as a person from Minnesota where tamps range from -20 F to +105 F in a single year, I’m constantly going to be adjusting tire pressure throughout the year due to temperature swings, whether air or nitrogen.

The green caps also aren’t my thing.

For you lucky ones (San Diego maybe?!?!), enjoy your nitrogen!
 
Thx for response, if pressure does go low is it ok to mix air with gas,

To quote Wikipedia...

"By volume, dry air contains 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.04% carbon dioxide, and small amounts of other gases."


So yes, it'd be just fine to mix nitrogen with dry air. Inert gases won't react... Chemistry 101.

Nitrogen is just a ridiculous upsell at dealerships for consumer vehicles. Agree with poster above.
 
To quote Wikipedia...

"By volume, dry air contains 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.04% carbon dioxide, and small amounts of other gases."


So yes, it'd be just fine to mix nitrogen with dry air. Inert gases won't react... Chemistry 101.

Nitrogen is just a ridiculous upsell at dealerships for consumer vehicles. Agree with poster above.
Tire pressure definitely doesn’t rise or fall nearly as much with nitrogen. I have used it for years. But you are entitled to your own opinion...
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Tire pressure definitely doesn’t rise or fall nearly as much with nitrogen. I have used it for years. But you are entitled to your own opinion...

Well chemistry says that they will both rise about 1 psi for every 10 degrees temperature (they respond similarly according to the ideal gas law) so that's very similar. But, nitrogen is a larger molecule, so it's less likely to diffuse through the tire and lower pressure over time. So, it would be more stable. Also, since it's a dry gas, it won't have the water vapor content that is in dry air, so that should also help a bit and have less corrosion.

For race cars and heavy equipment, it can be beneficial, but for consumer passenger vehicles it just isn't necessary. But, my point was that if you have it, in a pinch you can certainly add dry air to top up pressure. No issues there... of course would be better to continue with nitrogen only - just not essential.

Getting it at Costco or somewhere cheap is good - the many dealerships charging hundreds for it... I find that ridiculous.
 
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Well chemistry says that they will both rise about 1 psi for every 10 degrees temperature (they respond similarly according to the ideal gas law) so that's very similar. But, nitrogen is a larger molecule, so it's less likely to diffuse through the tire and lower pressure over time. So, it would be more stable. Also, since it's a dry gas, it won't have the water vapor content that is in dry air, so that should also help a bit and have less corrosion.

For race cars and heavy equipment, it can be beneficial, but for consumer passenger vehicles it just isn't necessary. But, my point was that if you have it, in a pinch you can certainly add dry air to top up pressure. No issues there... of course would be better to continue with nitrogen only - just not essential.

Getting it at Costco or somewhere cheap is good - the many dealerships charging hundreds for it... I find that ridiculous.
Yeah I will be putting in air thx
 
Hey everyone, just found this forum, figured I would drop a line and say hello, thx for having me. Iv been a proud owner of a Telluride for approximately 1 Month. Of course my experience is giving to me by my wife, she loves it. So I'm happy with that fact. I do have a question about the tires, I've noticed a green tire stem cap. Does that color indicate something other than air goes in tire? Also, tire says never exceed 40 psi. But the digital display on dash reads 50 psi. I purchased new from dealership. Am I missing something? Input on both would be sweet!!
Welcome aboard! And thank you for signing up. I'm glad you found us! :)
 
Costco will top off your nitrogen tires for free. They won't put Nitrogen in new tires or a replacement tire unless you buy from them.

Nitrogen is a huge scam. Recently bought a new trailer that had Nitrofill. It wasn't an a dealer add on price. Aluma Trailers does it from the factory. Closest Nitrofill dealer to me was 30 miles away. It was a Buick dealership and they said they would top off my trailer tires for $40

Next closest dealer was 300 miles away.
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