Recommended tire pressure
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Recommended tire pressure
My '99 f-150 ext cab has LT245/75R16's... wondering what a good tire pressure would be. The information on the sidewall shows a pretty wide range of psi's, related to load. This truck mostly runs "unladen".
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Joined: May 2003
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From: Maryland
My 03 4X4 4.6 also recommends 35 psi.
Be aware that a good rule of thumb is that for every 10 degrees drop in temperature the tire pressure will drop 3 psi. Soooo, if you check your readings on a 50 degree day and then the temperature drops to 30 degrees you will now have around 29 or 30 psi in your tires.
Be aware that a good rule of thumb is that for every 10 degrees drop in temperature the tire pressure will drop 3 psi. Soooo, if you check your readings on a 50 degree day and then the temperature drops to 30 degrees you will now have around 29 or 30 psi in your tires.
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Joined: Apr 2006
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Originally Posted by charlesh
My 03 4X4 4.6 also recommends 35 psi.
Be aware that a good rule of thumb is that for every 10 degrees drop in temperature the tire pressure will drop 3 psi. Soooo, if you check your readings on a 50 degree day and then the temperature drops to 30 degrees you will now have around 29 or 30 psi in your tires.
Be aware that a good rule of thumb is that for every 10 degrees drop in temperature the tire pressure will drop 3 psi. Soooo, if you check your readings on a 50 degree day and then the temperature drops to 30 degrees you will now have around 29 or 30 psi in your tires.
BTW, the fluctation using air is the reason why nitrogen is becoming more popular for tires. It doesn't fluctuate nearly as much, if at all, and it has no moisture.
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Originally Posted by LxMan1
Go by the door sticker, it will drive best this way. Mine is a 4x4 and recommends 35psi all around.
It completely escaped me that there IS a sticker with basic info on the door frame!
Front @32 psi <cold> / Rear @35 psi <cold>
Exactly what I was looking for!
</cold></cold>
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Go with what it says on the inside of the doorjamb. On my '99 it says 35 psi. I personally go with 38 psi front, 32 psi rear. The way I look at it, the front tires have more weight on them because they support the weight of the engine, so they need more psi than the rears. My tire wear is pretty even, so Id say its a pretty good pressure to run the tires at.
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