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Old 08-02-2014, 09:56 AM   #31
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The sticker on my 1997 f150 says 32 front and 35 rear. My '05 GMC 2500 4x4 says 65 front and 80 rear. Obviously the f150 is not rated to carry as big a load as the GMC. I don't see why if there is no load in the GMC it it would be much different than my f150. Granted the GMC is a little heavier so I could see 40 front and 35 rear being ok without a load. I think the door stickers are reflecting a fully loaded truck. Why would the rear tires on a truck need more than the front if there is no load? In an empty truck all the weight is on the front tires. I think if you frequently switch from load to no load you might as well make it easy on yourself and leave all tires at the maximum pressure. That being said, I am still at 35/35 on my f150 and 50/50 on my gmc.
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Old 08-02-2014, 10:06 AM   #32
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$200 at Lowes, 20 gal, handles everything I do in my garage. Overkill for just tires I suppose.
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Old 08-03-2014, 02:01 PM   #33
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I run what the label on the door of the vehicle recommends and monitor the tire wear. I'll adjust if tire wear indicates I need to.


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Old 08-03-2014, 02:09 PM   #34
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My truck's got the stock 16" LT tires, and it's 55 lbs. front and 80 lbs. rear.

I just run 55 lbs. in both unless I'm going to haul something heavy. They seem to be wearing equally.

Main thing is to not wait until 115K miles to get a wheel alignment--like I did. 3/4 ton and 1 ton trucks eat tie rod ends and lower ball joints, and spending $55 for an alignment is a small price to pay to have a professional watching the suspension for you.
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Old 08-07-2014, 12:07 AM   #35
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On tires rated for 80 psi, if you run half pressure, you heat the tire more due to side wall flex. Drop it some if you want it to ride a bit smoother, but if you drop it too much, you run the risk of ruining tires.

Oh... and then there's that fuel economy thing... Properly inflated tires will give you better fuel economy.
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Old 08-08-2014, 09:29 AM   #36
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Old 08-09-2014, 05:35 PM   #37
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Mine says to run 80 on rear and 65 on front. I would think there's more weight on the front tires than rear with an unloaded truck. From a weight carrying capacity, it seems backwards to me.


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Old 08-09-2014, 05:47 PM   #38
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Quote:
Originally Posted by sellis1053 View Post
Mine says to run 80 on rear and 65 on front. I would think there's more weight on the front tires than rear with an unloaded truck. From a weight carrying capacity, it seems backwards to me.


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That is true. With the truck unload you can safely run the rears at 65 also
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Old 08-09-2014, 05:52 PM   #39
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Sticker on my Dodge 2500 says to run 55 front 80 rear when loaded. 50 front 40 rear empty. What I do and tires wearing well.
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Old 08-09-2014, 06:42 PM   #40
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Quote:
Originally Posted by sellis1053 View Post
Mine says to run 80 on rear and 65 on front. I would think there's more weight on the front tires than rear with an unloaded truck. From a weight carrying capacity, it seems backwards to me.


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When unloaded there is probably more weight on the front. The 80 rating is probably for loaded. The lower pressure in the front is for traction because those are the steering wheels.

On a tire with an 80 rating, I wouldn't go much below 60-65. Never would I go half the pressure...
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