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Old 07-11-2018, 08:12 AM   #1
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Low Profile Tires and towing

We want to tow with our Ford Expedition. Roo 231kss. We have high quality, low profile tires. I have read not to over inflate your tires. Normally 35# but when we had them checked recently, the guy at the tire shop said when we tow we should pump them up to 50#. This goes against everything I've been taught. Thoughts?
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Old 07-11-2018, 09:30 AM   #2
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The guy at the shop is spot on.

Get yourself a small compressor like the Viair 88p. You should be inflating them to the max pressure printed on the tires when towing.

Viair 00088 88P Portable Air Compressor https://www.amazon.com/dp/B005ASY23I..._BrHrBb6GQSRAW
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Old 07-11-2018, 09:49 AM   #3
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When I was pulling with my Escalade I noticed the edges wearing faster and rounding off the surface of the tire. Inflating to max pressure resolved that.

Air them down after you get to your site if you're going to be in the area and traveling for a few days. The portable compressor makes it real easy.

Also, make sure you're always inflating/deflating when the tires are cold.
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Old 07-11-2018, 09:51 AM   #4
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As long as 50 PSI doesn't exceed the max psi listed on the sidewall, but I'm assuming (yeah, I know) the tire guy looked.
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Old 07-11-2018, 11:57 AM   #5
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There's "over-inflating" (beyond the door-sticker tag for normal loading), and then there's "over-inflating" (beyond the max pressure on the tire).


Extra pressure for extra load is a good thing. But never exceed the tire's max pressure.
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Old 07-11-2018, 03:08 PM   #6
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Quote:
Originally Posted by thebrakeman View Post
There's "over-inflating" (beyond the door-sticker tag for normal loading), and then there's "over-inflating" (beyond the max pressure on the tire).


Extra pressure for extra load is a good thing. But never exceed the tire's max pressure.
I was under the impression that the tire pressure on door sticker was the one to go with. Max tire pressure would be when the tire was a spare or in storage.
Just sayin.
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Old 07-11-2018, 03:13 PM   #7
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Quote:
Originally Posted by mudman2 View Post
Max tire pressure would be when the tire was a spare or in storage.
Just sayin.
That's a new one to me. Max PSI is the max PSI you can put in the tire and will show the max load limit at that pressure as well. The rim limit shouldn't be exceeded, either.
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Old 07-11-2018, 03:20 PM   #8
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That's a new one to me. Max PSI is the max PSI you can put in the tire and will show the max load limit at that pressure as well. The rim limit shouldn't be exceeded, either.


If I knew how to link web info it shows max pressure isnít going to increase weight capacity. The manufacturer and tire supplier quote a tire pressure that meets the max capacity for that axel. I would imagine that if your tire was capable of a higher pressure but axel couldnít maintain the weight increase safely that would be a different story.
Google up max tire pressure and scope it out.
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Old 07-11-2018, 03:23 PM   #9
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If I knew how to link web info it shows max pressure isnít going to increase weight capacity. The manufacturer and tire supplier quote a tire pressure that meets the max capacity for that axel. I would imagine that if your tire was capable of a higher pressure but axel couldnít maintain the weight increase safely that would be a different story.
Google up max tire pressure and scope it out.
Then what is a tire load chart for?
Attached Files
File Type: pdf tirecharts.pdf.pdf (344.2 KB, 30 views)
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Old 07-11-2018, 03:30 PM   #10
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So Iím I to surmise that by reading a chart that states higher pressure in tire increases weight carrying capacity it is safe to drive vehicle with higher weight carrying tires its alright to surpass vehicle axel capacity with their recommended tire pressure ?
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