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Old 12-05-2015, 12:45 AM   #1
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Default tire pressure



Any advice on the correct tire pressure for Yokohama Geolandar H/t-5 Lt 215/75/R15. The tag on the door says 100 lbs. No way! Much appreicate the help. Thank you Craig

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Old 12-05-2015, 01:58 PM   #2
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Default tire pressure



tag on door ????


On any Rilata`s that Ive seen it never shows over 65 lbs .....this is what I put 60-65 lbs



100lbs ,,,,,you sure ???



Dan

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Old 09-10-2016, 12:40 AM   #3
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here's what I'm wondering... where do you go to inflate your rear tires? mine call for 80 PSI but the local gas station's pay pump only goes up to 70
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Old 09-10-2016, 12:59 AM   #4
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here's what I'm wondering... where do you go to inflate your rear tires? mine call for 80 PSI but the local gas station's pay pump only goes up to 70
You have a Chevy, IIRC, so most of us have found that 80 psi rear and 65 psi front will give the best balance of handling vs comfort. There are those that like other pressures, but the 80/65 is by far the most popular.
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Old 09-10-2016, 06:27 AM   #5
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You might be looking at load rating.
Our Rialta has a 104 front and 109 rear load rating. The tires must meet or exceed the load rating that the RV has specified or it will be unsafe. Our sticker says 60 psi f/r.
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Old 09-10-2016, 07:32 AM   #6
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I generally do my tire fills at costco.

I have a compressor at home, but I buy my tires at costco which includes services and i am usually at costco in prep for a trip.

Mike
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Old 09-10-2016, 02:21 PM   #7
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.

Some shops provide nitrogen tire fills. The gas does not expand in hot temp.
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Old 09-10-2016, 03:01 PM   #8
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.Some shops provide nitrogen tire fills. The gas does not expand in hot temp.
Well, not exactly. ALL gasses expand with temperature. Pure nitrogen helps some in this regard, not because it is nitrogen, but because it is DRY (i.e., does not contain water vapor).

There are other advantages to nitrogen in tires, but they are minimal:

Should You Fill Your Car's Tires With Nitrogen?
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Old 09-11-2016, 01:09 PM   #9
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if we are going to get into it- my personal experience:

larger nitrogen molecules are slower to migrate thru rubber- psi while parked/stored will remain more stable

nitrogen does not expand as much as air due to temp changes ( which is why race cars and aircraft use nitrogen) and less affected by changes in air pressure due to elevation.

these changes can be enough to affect handling on some vehicles.

since I use costco- it costs me nothing



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Old 09-11-2016, 01:44 PM   #10
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if we are going to get into it- my personal experience:

larger nitrogen molecules are slower to migrate thru rubber- psi while parked/stored will remain more stable

nitrogen does not expand as much as air due to temp changes ( which is why race cars and aircraft use nitrogen) and less affected by changes in air pressure due to elevation.

these changes can be enough to affect handling on some vehicles.

since I use costco- it costs me nothing

Mike
Larger molecules is true so some tires will lose a bit less over time. Some tires aren't affected by it much. Our Michelins (3 vehicles) don't lose much at all. My big old Roadmaster sits all winter and barely loses 1.2 psi.

All gasses expand at the same rate with temperature, it is if there is moisture in the gas that makes a difference. Nitrogen gas is moisture free, so that is where the gain comes in. Elevation should make no difference per the ideal gas law.
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