Hey guys, sorry to ask another tire pressure question, but nobody addressed it.

I have a 2005 2wd F150, but I have 265/60/18 wheels on it. I noticed when I got my oil changed today that they had the tire pressure at 35psi, and noted that was the correct pressure. I saw that most of the discussions here said that a good pressure was around 40ish. Am I running to low?

 

on the drivers door jam, tire inflation is posted for oem tires.
all tire's have the max inflation on the side wall, more plys in the tire ( load range ) meens more PSI you can put in the tire, your tire size seems odd to me, also on the tire number of plys ( load range ) is indicated...IF you have a LT tire, 40 PSI ios fine, If you have a P rated tire, 35 over will blow out the side walls..

 

what about in the winter does the cold effect your tire pressure? and in the winter when there is snow on the ground is it a good idea to let a bit of air out of the tire , does this give more traction with less air in the tire?

 

You don't say which tire you have, so I can't tell if they are Load range C or D. If C 38-40 would be fine. If D I would bump them to about 44-46. As these are aftermarket tires, probably with a different load range, you can no longer go by the door sticker. Start about where I said and adjust as needed for wear.

 

These arent actually after market.. These are the tires & rims that come stock on the 4wd Lariat. They are BFGoodrich Radial Long Trail TA's. I just transplanted them to my truck. I just wondered if the weight difference of the trucks would matter. Also, right now i'm sitting at like 33.5 psi. Is that about normal for cold weather? Because when it gets hot, I assume the air will expand ? and be about right?

 

Forget what I said earlier. Now that I know exactly what load range of tires these are, 35 would be about right. These are P series tires, basically large passenger car tires. If what was on your vehicle before were P series, you could start at what was on the door sticker for them. Size may make some difference, but not that much.
Also use the same pressure, winter or summer. The outside temp will make a little difference, but not a drastic one.

Edit - Looked again at the specs for the tire. 35 is max, you probably don't need it that high. I would try 32 - 33.

 

Thanks man. you answered all my questions.

 

Thought id add my question in here instead of making another post.... what PSI is good to run in my tires? Ive got 285/70/17 BFGoodrich All Terrain TA/KO's..... right now im running it at 38psi, the shop i got them from said i could run it at 42 but i just wanted to check first, which would be best

 

I read those on the BFG site as Load Range D tires. I would bump them up to around 45. 38 is close for LR C, but not D.

 

hi all While we're on this subject I had new tires intalled 2 weeks ago and the tire tech put 50 psi in the front and 80 psi in the rears all according to the door sticker, is this ok? I kinda think its hi. they are BFG A/T 295/75/16

 

If they are the same load range and max cold pressure as the original, go with the door sticker.

 

Is there any problem inflating the recommended (35psi) to 40psi on stock Lariat 2wd screw?

 

The tires are BFG Long Trail T/A 18" P rated that come stock on the Lariat Screw. The sidewall says 35psi max as does the sticker on the door. The tires look so much better and ride better at 40psi which is why I ask is this ok?