Re: [A/S] Tire pressures?

Daisy,
Here is what Goodyear stated on the matter. It is less stressful on a tire to be OVER inflated by 10psi than to be UNDER inflated by 10% (ie necessary pressure to carry actual load which may be less than max pressure of tire). Under inflation, you might remember, was the major cause of the all the Firestone Wrangler tires on Ford Explorers a number of years ago. Ford was the guilty party as they had recommended a lower inflation pressure to give a softer ride...until the tire blows and the ride is not so great. People were running the tires at the recommended empty load pressure recommendation, but carrying heavier loads without adjusting the tire pressures accordingly. Sidewall flex overheated the tires and they failed.

Personally, I run all my tires at max pressure as they run cooler due to less flexing and as a result they deliver longer treadlife, but this is my personal preference. I have found little if any difference in the ride itself due to running a max pressure (ie measured while tire is at ambient temperature)

David T
On Apr 30, 2012, at 8:56 AM, D Welch wrote:

> Hi folks,
>
> This will probably cause some squabbles, but:
>
> What pressure do you put your truck and trailer tires at for traveling?
>
> On the Truck, the tires say 80 max, the label on the door post says 80
> rear, 65 front.
>
> Trailer tires, load range E say 80 max.
>
> What's the wisdom here? I don't want to harden the ride of either too
> much, but it's maybe better for the tires to flex less?
>
> Note that I'm heading out to drive in 90 plus temps.
>
> Daisy (getting ready to leave Big Bend before I melt)
>



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