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Old 10-17-2011, 03:16 PM   #1
wrighfr58
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F250 Tire Pressure Check

I think the tire pressure is different for the front and back. 50 Psi in the front and 80 PSI in the rear

Can any other F250 owner confirm?
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Old 10-17-2011, 03:50 PM   #2
hankpage
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Tire pressure depends on the weight being carried on each axle. When towing I run Max. in rear and 70 psi in front. My trailer tires are always at Max. pressure. When solo I run 60 psi front and 50 psi rear .... I increase rear to 60 psi for snow. (sorry for that four letter word) Check the door sticker for Ford's recommendation for your truck and consider that your minimum with stock tires.
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Old 10-17-2011, 04:53 PM   #3
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one more reason for on-board air. i usually run mine about the same as above. my work truck (chevy 3500 dually diesel) i run full pressure in rear all the time and about 10 lbs less in front. i do this cause it is loaded about 45 percent of the time and towing 40 percent of the time.
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Old 10-17-2011, 04:56 PM   #4
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wrighfr58, Howdy;

Quote:
Originally Posted by hankpage View Post
Check the door sticker for Ford's recommendation for your truck and consider that your minimum with stock tires.
That is the best part and the part I agree with the most!

hankaye (the other hank)
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Old 10-19-2011, 05:28 AM   #5
Jeffrey11
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Please Read this - On Tire Presure

Quote:
Originally Posted by wrighfr58 View Post
I think the tire pressure is different for the front and back. 50 Psi in the front and 80 PSI in the rear

Can any other F250 owner confirm?
Read your door on the Ford F Series they list fully load tire pressure

Most newer F 350 series This would be 65 Front and 80 Rear
If you run 80 In the rear empty you will cut your tire tread life by half

The correct way to figure out your tire pressure is the following

1) Never Exceed the max on the tire - If you have Load Range D 65 psi tire do not do not put 80 psi - get the correct tire.

2) Get a tire Load inflation table for your tire and size

3) Weigh the truck Loaded and Unloaded
* Loaded on a cat scale Get a front axle weight and rear axle weight and a trailer weight divide each by two and apply pressure as in the chart
*Unloaded as you drive it daily get a front and rear axle weight and divide each by 2 and apply as in the chart.

4) Pressure set always at cold ambient temp use a good accurate gauge

Toyo offers this reference guide great reading

http://toyotires.com/tire-care-safet...flation-tables
Example

LT285/70R17 126S E/10 33X11.5R17
@35 2105
@40 2315
@45 2510
@50 2755
@55 2890 Load C
@60 3070
@65 3195 Load D
@70 3415
@75 3525
@80 3750 Load E

Just an example not real numbers loaded
So assuming this tire is on our truck and the front weight is 5000 lbs and rear is 7000 lbs this would give you 2500 Front and 3500 rear per tire

Or 45psi front and 75 psi rear

But you must also factor in solid front axle with lower tire pressure = Death wobble. SO in my recommendation never go below 60psi front to avoid death wobble.

Running your tires at Door sticker rating while empty will give a harsher ride and increased tire wear. Running to low psi death wobble and side wall failures.

Never load your truck without adding air to at least the minimum for the weight in that particular tire.

Hope this helps
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Old 10-19-2011, 05:38 AM   #6
wrighfr58
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Thank you kindly Jeffery11

Very helpful and I will get the specifics for my truck and tire. Do you have a sugguestion for a 12v compression or an air on borad solution?
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Old 10-19-2011, 06:54 PM   #7
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Viair. Kinda spendy. But very high quality on board systems.

Jason
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Old 10-24-2011, 05:43 PM   #8
Jeffrey11
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Quote:
Originally Posted by wrighfr58 View Post
Thank you kindly Jeffery11

Very helpful and I will get the specifics for my truck and tire. Do you have a sugguestion for a 12v compression or an air on borad solution?

You could try Harbor Freight they have a couple of decent hire end compressors
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