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Old 11-06-2012, 12:17 PM
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Another noob question

I'm having a hard time figuring out the proper inflation for my tires. I've googled, looked up charts/tables, etc.. I don't have access to a scale to weigh my truck.

Can someone at least help point me in another direction?

2005 f250 CC SB 4x4

The tires are ProComp xtreme m/t 305/65r/17. Load range E, max load 3195 at 65psi.

My guess-o-meter says about 60psi in the front and 55psi in the back.

That's a complete and total pull out of my @$$ guess.

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Old 11-06-2012, 12:31 PM
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Nope, good question! What do you do with the truck? Different tires respond to different things.

Someone with your tire and your use of the truck will reply and help out better.
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Old 11-06-2012, 12:35 PM
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95 percent of the time, commuting.. just me and an empty bed.. then occasionally pulling a 12k pound trailer.

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Old 11-06-2012, 12:38 PM
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My Trail Grapplers are at 55. Any more I get a little movment. Not sure why.
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Old 11-06-2012, 12:45 PM
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Run chalk across the tread of the tires when they're new, adjust psi to remove the most chalk. It works best on new tires with uniform tread depth.

I run 45 in my 315/75-16 BFG ATs and have pretty even tread wear.

sent from a dumb guy with a smart phone
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Old 11-06-2012, 12:45 PM
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Quote:
Originally Posted by Galaxie View Post
My Trail Grapplers are at 55. Any more I get a little movment. Not sure why.
Did you use your guess-o-meter to come up with 55psi too?

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Old 11-06-2012, 12:50 PM
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Quote:
Originally Posted by Karls03 View Post
Run chalk across the tread of the tires when they're new, adjust psi to remove the most chalk. It works best on new tires with uniform tread depth.

I run 45 in my 315/75-16 BFG ATs and have pretty even tread wear.

sent from a dumb guy with a smart phone
But I'm lazy and want someone to just magically know the proper inflation and tell me.

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