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Old 11-09-2012, 03:56 PM   #1 (permalink)
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Low Tire Pressure

The pressure of my tires are on the low side and I would like to inflat them. However, I am not sure if the tires are filled with air or nitrogen. Is there any way I can find out? If they are filled with nitrogen, where can I fill them up to the recommended pressure? Mine is a 2011 Advance. Thanks in advance.
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Old 11-09-2012, 03:58 PM   #2 (permalink)
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I have topped off my nitrogen filled tires with regular air with no side effects.
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Old 11-09-2012, 03:59 PM   #3 (permalink)
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It doesn't matter what's in it now, just put air in it.
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Old 11-09-2012, 05:06 PM   #4 (permalink)
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Originally Posted by dons04mdx View Post
It doesn't matter what's in it now, just put air in it.
That's correct. The little bit you add won't matter. Especially since air is already 78 percent nitrogen.

You may want to read this article on the Tire Rack website:

Facts and Myths About Nitrogen Inflated Tires

Its conclusion:

Quote:
The only benefit from running pure nitrogen in tires is the increased air retention (slower loss of air out of the tires over time). A tire that is normally maintained with the proper air pressure will perform exactly like a tire with a pure nitrogen fill. If you can get a pure nitrogen fill for free, there is no harm in doing so but very little (if any) benefit from it.
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Old 11-10-2012, 05:57 PM   #5 (permalink)
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Thanks all for your responses. I will go ahead and fill the tires with air.
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Old 11-10-2012, 06:59 PM   #6 (permalink)
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What is the ideal pressure u maintain in your tiers, front and rear? Mines an mdx 2012 tech.


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Old 11-10-2012, 08:17 PM   #7 (permalink)
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32psi, F/R. Per OM.
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Old 11-11-2012, 12:13 AM   #8 (permalink)
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Good time for everyone to remember that you lose a pound of air for each 10 degrees it gets colder. Great time to start checking the tires.

I have a Black & Decker pump that works great, set it to 32 psi, plug it in and forget it.
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Old 11-12-2012, 01:21 PM   #9 (permalink)
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Good time for everyone to remember that you lose a pound of air for each 10 degrees it gets colder. Great time to start checking the tires.

I have a Black & Decker pump that works great, set it to 32 psi, plug it in and forget it.

Which one do you have? Do you have a link?

I paid $1.5 for air in one of the gas stations nearby my house, and I can never get exactly 32 psi for all four tires

Thanks.
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Old 11-12-2012, 04:40 PM   #10 (permalink)
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I paid $1.5 for air in one of the gas stations nearby my house, and I can never get exactly 32 psi for all four tires
The easiest way to set your tires to a precise pressure is to pump them up over the figure you're shooting for, then let air out a little bit at a time until it's spot on.
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Old 11-12-2012, 10:13 PM   #11 (permalink)
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Which one do you have? Do you have a link?

I paid $1.5 for air in one of the gas stations nearby my house, and I can never get exactly 32 psi for all four tires

Thanks.
It's called the Black & Decker ASI300 Air Station Inflator - Electric Air Compressor. I bought in 4 years ago and it's worked great. Note on Amazon reviews are all over the place. Lots of folks love it, others had defective units.

Sells for about $50.
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Old 11-13-2012, 05:04 AM   #12 (permalink)
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I'm under the impression 50psi is the max on 255-55-18s. I run 45psi on my 255-55-18s. 07 RDX wheels and larger tires on a 02MDX. Under inflating causes wear issues. Tire Tech Information - Checking Tire Inflation Pressure
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Old 11-13-2012, 05:39 AM   #13 (permalink)
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I'm under the impression 50psi is the max on 255-55-18s. I run 45psi on my 255-55-18s. 07 RDX wheels and larger tires on a 02MDX. Under inflating causes wear issues. Tire Tech Information - Checking Tire Inflation Pressure
Max tire pressure doesn't mean that is it optimal. And at 45psi, I'm pretty sure your over-inflated.

OEM recommends cold psi at 32, so when it heats up it will optimally hit around 36.

And above poster is correct in saying that on colder days, tire pressures will be a bit lower than normal.
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Old 11-13-2012, 06:12 AM   #14 (permalink)
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Originally Posted by bolt View Post
I'm under the impression 50psi is the max on 255-55-18s. I run 45psi on my 255-55-18s. 07 RDX wheels and larger tires on a 02MDX. Under inflating causes wear issues. Tire Tech Information - Checking Tire Inflation Pressure
Over inflation causes excess tire wear in the center of the tire.

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Old 11-13-2012, 04:18 PM   #15 (permalink)
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Max tire pressure doesn't mean that is it optimal. And at 45psi, I'm pretty sure your over-inflated.

OEM recommends cold psi at 32, so when it heats up it will optimally hit around 36.

And above poster is correct in saying that on colder days, tire pressures will be a bit lower than normal.
^^^^^ Good advice.

You should be measuring your tire pressure "cold", i.e. when the tires have not been driven on in several hours and are in the shade outside (at the normal outside temperature for that time of year). So set it to 32 psi (NOT 45!!!) on a day that is neither unusually cold nor unusually warm.

Check your pressures at least once a month. Tires normally lose as much as 1 psi of pressure per month even when there is nothing wrong with them.
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