Tire pressure
#41
2020 RDX White/Espresso
Nitrogen in tires is pretty much pointless. First, air is 78% nitrogen anyway. And "pure" nitrogen is only 95% pure. Having pure nitrogen in your tires may help retain pressure a little bit, but not substantially. And if you ever need to inflate your tires, you're limited to doing it with nitrogen or you've just undone the effect of having nitrogen in there in the first place. If the dealer did it on your new car gratis, great. If they want you to pay a premium to have them inflated in that way in the future, skip it.
As for the pressure, as you can see from the comments people have varying opinions about how much above or below the recommended cold temp setting. One thing that is NOT good though is having your tires at different pressures. 1 or 2 psi probably isn't going to make a difference, but generally speaking you want to try to keep them all at the same pressure.
Personally I'm running 36 on all four tires, but that's just because the temperature has been fluctuating so much recently that I don't want to set them to 33 and then find them at 30 on a cold day. I'd rather have them a little high than a little low.
As for the pressure, as you can see from the comments people have varying opinions about how much above or below the recommended cold temp setting. One thing that is NOT good though is having your tires at different pressures. 1 or 2 psi probably isn't going to make a difference, but generally speaking you want to try to keep them all at the same pressure.
Personally I'm running 36 on all four tires, but that's just because the temperature has been fluctuating so much recently that I don't want to set them to 33 and then find them at 30 on a cold day. I'd rather have them a little high than a little low.
#42
Drifting
Join Date: Apr 2018
Location: New Yorkie, Hudson Valley
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Guys -
Just bought my new 2020 Acura RDX SH-AWD with Advance. The car has Continental tires, and the dealer filled it with Nitrogen (supposed to be good for the tires - but I really have no clue!). I tried various drive modes to see if that impacted the ride (no difference as far as I can tell). That leads me to wonder if this is a Nitrogen thing? Also, the current pressures I see on the car are as follows (Right front - 38psi , Left Front - 37psi . Right Rear - 37psi , and Left Rear - 36psi ). Are these right or too high? What can I do to improve the ride somewhat? Also, is there a trade-off between the tire pressure and gas mileage? By the way, that was the pressures when the car was delivered to me (2 weeks ago now)
Sorry for the list of questions, but just trying to figure out my new car!
Thanks in advance for your help!
Sri
Just bought my new 2020 Acura RDX SH-AWD with Advance. The car has Continental tires, and the dealer filled it with Nitrogen (supposed to be good for the tires - but I really have no clue!). I tried various drive modes to see if that impacted the ride (no difference as far as I can tell). That leads me to wonder if this is a Nitrogen thing? Also, the current pressures I see on the car are as follows (Right front - 38psi , Left Front - 37psi . Right Rear - 37psi , and Left Rear - 36psi ). Are these right or too high? What can I do to improve the ride somewhat? Also, is there a trade-off between the tire pressure and gas mileage? By the way, that was the pressures when the car was delivered to me (2 weeks ago now)
Sorry for the list of questions, but just trying to figure out my new car!
Thanks in advance for your help!
Sri
I use a proprietary blend of 78% nitrogen.
when cold, I use the number on the plate at the drivers door. helps me from figuring out what to do.
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Rolf65 (09-06-2023)
#43
Pro
I had also heard reports that running just 78% nitrogen was the optimum amount for the best performance.
After spending some time searching, I found a machine at Costco that claims to take in regular air, and converts it to the ideal 78% nitrogen and 21% oxygen (and another 1% of miscellaneous gases which are insignificant).
I have been using this machine to inflate my tires for several years now, with great success, and I would never go back to using regular air from a service station pump.
I am always cautious to use this machine in a well ventilated area so that I am not overcome by the gases that it produces.
After spending some time searching, I found a machine at Costco that claims to take in regular air, and converts it to the ideal 78% nitrogen and 21% oxygen (and another 1% of miscellaneous gases which are insignificant).
I have been using this machine to inflate my tires for several years now, with great success, and I would never go back to using regular air from a service station pump.
I am always cautious to use this machine in a well ventilated area so that I am not overcome by the gases that it produces.
#44
Intermediate
Nitrogen in tires is pretty much pointless. First, air is 78% nitrogen anyway. And "pure" nitrogen is only 95% pure. Having pure nitrogen in your tires may help retain pressure a little bit, but not substantially. And if you ever need to inflate your tires, you're limited to doing it with nitrogen or you've just undone the effect of having nitrogen in there in the first place. If the dealer did it on your new car gratis, great. If they want you to pay a premium to have them inflated in that way in the future, skip it.
As for the pressure, as you can see from the comments people have varying opinions about how much above or below the recommended cold temp setting. One thing that is NOT good though is having your tires at different pressures. 1 or 2 psi probably isn't going to make a difference, but generally speaking you want to try to keep them all at the same pressure.
Personally I'm running 36 on all four tires, but that's just because the temperature has been fluctuating so much recently that I don't want to set them to 33 and then find them at 30 on a cold day. I'd rather have them a little high than a little low.
As for the pressure, as you can see from the comments people have varying opinions about how much above or below the recommended cold temp setting. One thing that is NOT good though is having your tires at different pressures. 1 or 2 psi probably isn't going to make a difference, but generally speaking you want to try to keep them all at the same pressure.
Personally I'm running 36 on all four tires, but that's just because the temperature has been fluctuating so much recently that I don't want to set them to 33 and then find them at 30 on a cold day. I'd rather have them a little high than a little low.
I had also heard reports that running just 78% nitrogen was the optimum amount for the best performance.
After spending some time searching, I found a machine at Costco that claims to take in regular air, and converts it to the ideal 78% nitrogen and 21% oxygen (and another 1% of miscellaneous gases which are insignificant).
I have been using this machine to inflate my tires for several years now, with great success, and I would never go back to using regular air from a service station pump.
I am always cautious to use this machine in a well ventilated area so that I am not overcome by the gases that it produces.
After spending some time searching, I found a machine at Costco that claims to take in regular air, and converts it to the ideal 78% nitrogen and 21% oxygen (and another 1% of miscellaneous gases which are insignificant).
I have been using this machine to inflate my tires for several years now, with great success, and I would never go back to using regular air from a service station pump.
I am always cautious to use this machine in a well ventilated area so that I am not overcome by the gases that it produces.
#45
Intermediate
I had also heard reports that running just 78% nitrogen was the optimum amount for the best performance.
After spending some time searching, I found a machine at Costco that claims to take in regular air, and converts it to the ideal 78% nitrogen and 21% oxygen (and another 1% of miscellaneous gases which are insignificant).
I have been using this machine to inflate my tires for several years now, with great success, and I would never go back to using regular air from a service station pump.
I am always cautious to use this machine in a well ventilated area so that I am not overcome by the gases that it produces.
After spending some time searching, I found a machine at Costco that claims to take in regular air, and converts it to the ideal 78% nitrogen and 21% oxygen (and another 1% of miscellaneous gases which are insignificant).
I have been using this machine to inflate my tires for several years now, with great success, and I would never go back to using regular air from a service station pump.
I am always cautious to use this machine in a well ventilated area so that I am not overcome by the gases that it produces.
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Cuzz (01-13-2020)
#46
Skeptic
I use this guy. My tires have a touch of halitosis.
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Madd Dog (01-11-2020)
#47
Skeptic
Just got this gauge on sale at Amazon. $28 marked down from $90. Incredible deal and excellent product.
Hurry. The price won't hold more than a day or two.
Hurry. The price won't hold more than a day or two.
#49
Expanse me
Just got this gauge on sale at Amazon. $28 marked down from $90. Incredible deal and excellent product.
https://www.amazon.com/gp/aw/d/B07VV78RZ1
Hurry. The price won't hold more than a day or two.
https://www.amazon.com/gp/aw/d/B07VV78RZ1
Hurry. The price won't hold more than a day or two.
#50
Skeptic
#52
Skeptic
Yeah many similar but not the same. Some are digital, some are gauges, etc. The one I linked to actually is not the one I bought. Same thing but I paid less. Some of them appear and disappear from Amazon and prices change regularly. Sometimes they're sold by 3rd party vendors.
Bottom line, that one is very good, IMO. I went through 3 of those red handheld ones in about 5 years. They're crap. I even tried changing the batteries in one and it just fell apart. This one just takes 2 AAAs.
Bottom line, that one is very good, IMO. I went through 3 of those red handheld ones in about 5 years. They're crap. I even tried changing the batteries in one and it just fell apart. This one just takes 2 AAAs.
#54
Instructor
I use an old metal analog gauge as well - got it in 1998 when my girlfriend (wife since) and I bought a used car. Anyway, I have mine RDX adv set to 35psi cold. Cold, in my case, is my garage after sitting overnight.
I check it every month and it lives in a charmed life in an attached garage so I'm not as worried about temperature fluctuations. The only thing I noticed is that the TPMS reads a couple of psi high. I have checked it with another gauge and it's definitely high.
Has anyone else noticed it?
I check it every month and it lives in a charmed life in an attached garage so I'm not as worried about temperature fluctuations. The only thing I noticed is that the TPMS reads a couple of psi high. I have checked it with another gauge and it's definitely high.
Has anyone else noticed it?
#55
Expanse me
I use an old metal analog gauge as well - got it in 1998 when my girlfriend (wife since) and I bought a used car. Anyway, I have mine RDX adv set to 35psi cold. Cold, in my case, is my garage after sitting overnight.
I check it every month and it lives in a charmed life in an attached garage so I'm not as worried about temperature fluctuations. The only thing I noticed is that the TPMS reads a couple of psi high. I have checked it with another gauge and it's definitely high.
Has anyone else noticed it?
I check it every month and it lives in a charmed life in an attached garage so I'm not as worried about temperature fluctuations. The only thing I noticed is that the TPMS reads a couple of psi high. I have checked it with another gauge and it's definitely high.
Has anyone else noticed it?
#58
TPMS question
Hey everyone... I don't mean to threadjack here but since we're talking about pressures and TPMS... Does the TPMS in the 2020 RDX need resetting after a pressure fill or adjustment? I haven't found anything in the manual or in the car systems to suggest it needs to recalibrate or reset after adjusting my pressures. Having had countless Audis, BMWs, Porsches, and Infinitis, I've become accustomed to resetting or recalibrating TPMS after a tire pressure adjustment and this car doesn't seem to have that option. Thoughts?
Thanks!
Thanks!
#59
Expanse me
Hey everyone... I don't mean to threadjack here but since we're talking about pressures and TPMS... Does the TPMS in the 2020 RDX need resetting after a pressure fill or adjustment? I haven't found anything in the manual or in the car systems to suggest it needs to recalibrate or reset after adjusting my pressures. Having had countless Audis, BMWs, Porsches, and Infinitis, I've become accustomed to resetting or recalibrating TPMS after a tire pressure adjustment and this car doesn't seem to have that option. Thoughts?
Thanks!
Thanks!
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TheDatanator (02-19-2020)
#60
Drifting
Hey everyone... I don't mean to threadjack here but since we're talking about pressures and TPMS... Does the TPMS in the 2020 RDX need resetting after a pressure fill or adjustment? I haven't found anything in the manual or in the car systems to suggest it needs to recalibrate or reset after adjusting my pressures. Having had countless Audis, BMWs, Porsches, and Infinitis, I've become accustomed to resetting or recalibrating TPMS after a tire pressure adjustment and this car doesn't seem to have that option. Thoughts?
Thanks!
Thanks!
3rd-gen RDX has a direct-read TPMS system with "smart sensors" that directly read the internal air pressure in the tire. The sensors pair with the vehicle automatically without intervention ( assuming compatible sensors are installed in the wheels ), and if new sensors ( different wheels ) are installed the pressure will register within a few miles of driving. Same deal if the tires/wheels are rotated to different positions on the car.
"Indirect TPMS" systems need to be calibrated because they have no physical sensors to read internal air pressure, and instead monitor effective rolling circumference of the tires. More air pressure = rounder tire = bigger circumference. That system must be calibrated after filling the tires to a known air pressure, and it will then alert the driver to changes beyond some threshold. Some recent Hondas use the indirect system, including CR-V.
Last edited by Wander; 02-19-2020 at 07:13 PM.
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TheDatanator (02-19-2020)
#61
Expanse me
No resetting or recalibrating required, ever.
3rd-gen RDX has a direct-read TPMS system with "smart sensors" that directly read the internal air pressure in the tire. The sensors pair with the vehicle automatically without intervention ( assuming compatible sensors are installed in the wheels ), and if new sensors ( different wheels ) are installed the pressure will register within a few miles of driving. Same deal if the tires/wheels are rotated to different positions on the car.
"Indirect TPMS" systems need to be calibrated because they have no physical sensors to read internal air pressure, and instead monitor effective rolling circumference of the tires. More air pressure = rounder tire = bigger circumference. That system must be calibrated after filling the tires to a known air pressure, and it will then alert the driver to changes beyond some threshold. Some recent Hondas use the indirect system, including CR-V.
3rd-gen RDX has a direct-read TPMS system with "smart sensors" that directly read the internal air pressure in the tire. The sensors pair with the vehicle automatically without intervention ( assuming compatible sensors are installed in the wheels ), and if new sensors ( different wheels ) are installed the pressure will register within a few miles of driving. Same deal if the tires/wheels are rotated to different positions on the car.
"Indirect TPMS" systems need to be calibrated because they have no physical sensors to read internal air pressure, and instead monitor effective rolling circumference of the tires. More air pressure = rounder tire = bigger circumference. That system must be calibrated after filling the tires to a known air pressure, and it will then alert the driver to changes beyond some threshold. Some recent Hondas use the indirect system, including CR-V.
Thanks!
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