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Tire Pressure Question

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Old 05-08-2012, 10:52 PM
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Tire Pressure Question

I have BFG All Terrains 285 75 16 load range E on my 2000 x V-10 4wd

Door says 45 PSI front 55 PSI rear.

Tire says max is 80 PSI.

What tire pressures are you guys running or recommend?

D.
 
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Old 05-08-2012, 11:34 PM
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I have the same tires on my truck. I run them at 65 in front and 70 in the rear.
 
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Old 05-09-2012, 01:21 AM
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my sticker is 50/55 f/r but I run the rears near their max when I tow.
 
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Old 05-09-2012, 08:05 AM
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The door is irrelavent, since you have completely different tires than those #'s are for...

I adjust my tire pressures according to the wear pattern - too much air wears the middle, too little, the edges. I also tow HEAVY, so will run the rears at max psi for the tire (80psi for load range E).

My X w/same size and load rating tires likes 70psi all the way around...
 
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Old 05-09-2012, 08:10 AM
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Well, the size is not that much different 265 vs. 285. The big thing is the sticker has load range D on them. Does yours show range D or E.

I put 55 all the way around in them to see how it goes. That might be a tad light considering how much the ole X weighs.

D.
 
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Old 05-09-2012, 08:20 AM
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D rated tires have max pressure of 65psi, E's are 85psi.

55psi is not enough for those tires IMO.
 
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Old 05-09-2012, 09:46 AM
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OK - what do you run your fronts at when the rears at 80?

D.
 
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Old 05-09-2012, 10:07 AM
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Don't forget the max rated pressure is where the tire is the strongest.
 
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Old 05-09-2012, 11:02 AM
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I typically run 65-70 psig all the time, then increase to 75 front, 80 rear when towing. I've got "E" Michelins. No unusual wear patterns after 50,000 miles.
 
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Old 05-09-2012, 03:05 PM
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here is a page that tells you the best way to get your ideal pressures: Tire Pressure Checker: Righting the Pressure in Your New Tires
 
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Old 05-09-2012, 03:44 PM
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max all round when towing ... other than that its 65 front and 70 rear
 
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Old 05-09-2012, 04:48 PM
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Originally Posted by ddivinia
OK - what do you run your fronts at when the rears at 80?

D.
I don't change the front psi. Higher psi tends to reduce traction and make the ride harsher, so the 'right' pressure is best. When I have 1000+ lbs of tounge weight from the trailer, traction is not an issue and the stiffer sidewalls make for a less squishy ride. Some run max psi all around all the time for better MPG, but I can't stand the side effects and likely the 'savings' are eaten up by increased tire wear...
 
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Old 05-09-2012, 08:12 PM
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I prefer 50/55 not towing and bump it up to 55/65 towing my 7000 lb trailer.

Here's an inflation chart. http://www.goodyear.com/truck/pdf/da...dInflation.pdf

50 PSI in a stock tire size gives you 2470 load capacity. 65 gives you 3000 lbs. My truck weighs about 3500 front and 4000 rear by itself. 3500 front and about 5000 in the back towing. I'm sure a diesel or 4WD would weigh a bit more, but not THAT much more. At any rate, those pressures still allow a significant extra margin.

I don't see any safety reason to run 80 PSI, but it may be a personal preference thing. I don't like the ride as it is when I unhook the trailer, I expect 80 PSI would really be stiff.
 
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Old 05-10-2012, 10:22 AM
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Originally Posted by SkySkiJason
D rated tires have max pressure of 65psi, E's are 85psi. I meant 80psi...

55psi is not enough for those E-Rated tires IMO.
Originally Posted by ExxWhy
I prefer 50/55 not towing and bump it up to 55/65 towing my 7000 lb trailer.

Here's an inflation chart. http://www.goodyear.com/truck/pdf/da...dInflation.pdf

50 PSI in a stock tire size gives you 2470 load capacity. 65 gives you 3000 lbs. My truck weighs about 3500 front and 4000 rear by itself. 3500 front and about 5000 in the back towing. I'm sure a diesel or 4WD would weigh a bit more, but not THAT much more. At any rate, those pressures still allow a significant extra margin.

I don't see any safety reason to run 80 PSI, but it may be a personal preference thing. I don't like the ride as it is when I unhook the trailer, I expect 80 PSI would really be stiff.
The OP is asking what pressure to run in his Load Range E tires.

Fwiw, my front axle is over 4000 lbs and rear is about 5000 lbs with a 7.3 and both tanks full of fuel. I'm over 9k lbs with passengers and gear and the Toy Hauler tips 12k lbs pretty easliy...
 
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Old 05-10-2012, 01:52 PM
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By stock tire size, I was referring to LT265/75 16 E. 50 PSI in that tire will give you an axle capacity of 4940. (2470 each tire) 65 PSI will give you 6000 lbs capacity per axle, well above what most people would be needing most of the time. Those numbers come from the above referenced chart. Tire brand doesn't matter more than a few lbs either way.

To the OP's question, I like to run less pressure than others. I think anything over 50 PSI in those tires is enough from a load standpoint, then it becomes a question of how it rides and drives to you and how the tires wear.
 


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