Tire Pressure ?

[baywatch]

Ok, The tag in my door on my truck says 65psi on the front tires and 75psi on the back. The tire itself says max cold psi @80.

Where should I keep them? My guess would be put them all to 80psi when Hauling heavy load and follow the door when I am just doing daily driving.

I don't really claim to know much, so what do you guys do.

Thanks,

Josh

[MarylandMark]

I go with the door but good question!

I figured the tire is made for like 100 vehicles so has a general rating but the door sticker tells me what to set it at for my vehicle.

I put my like 5% over- they lose a little air most of the time and gives me better MPG I think

[inbetween]

As long as the tire is equivalent in size and rating to the original tire, go with the psi on the door. The vehicle's ride, handling, safety and fuel economy were designed to to work with those pressures.

[Blue Oval]

What year is the truck,does it have the tire pressure mont. system?If you don't keep the air in the newer trucks to specs the tire light may come on.

[inbetween]

What year is the truck,does it have the tire pressure mont. system?If you don't keep the air in the newer trucks to specs the tire light may come on.

good point, I forgot about the tire monitors

[Griff]

If they are the stock size and load rating, then go by whats written in the door or close to it. Mine says 55# front and 80# rear. I run about 60# front and 75# rear. The tires are rated at 80psi.

[baywatch]

What year is the truck,does it have the tire pressure mont. system?If you don't keep the air in the newer trucks to specs the tire light may come on.

Thanks for the responses guys. It is an 08 Dodge 3500, and If the the tires are low the tire monitor will come on (That is actually what made me check my tire pressure in the first place).

Thanks again..

[Bgchuby01]

Always go by the psi on the tire. If you have a failure and the tire is the cause they will look at the psi in the other tires.

[baywatch]

Always go by the psi on the tire. If you have a failure and the tire is the cause they will look at the psi in the other tires.

So then, are you saying to go by max cold psi on the tire rather than what the door says? Or are you just saying make sure that you are at least congruent with the door recommended psi in the event of an "incident" they will check the other tires?

Thanks,

[slowride33]

2005 GMC 3\4 ton says 55 up front and 80 rear. I run the rears at 70 during the winter months cause I know I won't be hauling the boat at all, gives a little smoother ride with less pressure in the rears.

[sledge]

"max cold psi" is what gives the max load rating, NOT necessarily what you should run the tires at every day. You can't go wrong with the door sticker. If you're not carrying a heavy load, losing a few psi in the rear shouldn't hurt as well as carrying a few more in the front.

Also remember a general rule that psi changes with air temp: 1psi per 10degrees. So if you started with 55/75 when it was 70F, you can lose 5psi during winter. Final thought: it's better to have a little more than a little less.

[inbetween]

Thanks for the responses guys. It is an 08 Dodge 3500, and If the the tires are low the tire monitor will come on (That is actually what made me check my tire pressure in the first place).

Thanks again..

Always go by the psi on the tire. If you have a failure and the tire is the cause they will look at the psi in the other tires.

For the tire monitor required by the gubment for an '08 vehicle, go by the label on the door or the check tire light/message will come on.

[Tempest38]

Remember in the real heat of summer especially on long tows you can Gain pressure. Keep it in mind.... Just my two cents...

[cpmarine]

The max pressure on the tire is the pressure required when the tire is loaded to it's capacity. I am always close to max weight so I go by what's on the tire. If you're just using your vehicle for personal use you should probably do what the vehicle manufacturer says, what is stamped on the door.

[Chris]

If it's something like a Ford Explorer where the engineers f'ed with tire pressure to get the trucks to stop rolling over, stay with the door sticker. If it's a real truck (250/2500+) then go with the tire. Heat kills tires. Tire flex generates heat. The more air, the less flex. They may not ride as well, but they'll do the job- plus you'll pick up MPG.

[FULL FORCE]

Mine are rated at 80 psi, I run them at that all the time, I agree with more is better, I also tow alot, even in winter, truck feels stable all the time, I can care less about ride, rides good for a F250 to me..

[Tony M]

THERE was something in the news about changing your air to some other psi but can't recall what the H it was , they would let the air out of your tires and fill back up with ???? and you could pick up 1 or 2 MPG .

[njthumper]

THERE was something in the news about changing your air to some other psi but can't recall what the H it was , they would let the air out of your tires and fill back up with ???? and you could pick up 1 or 2 MPG .

Fill with Nitrogen, Nascar cars run with it.

[RollWithIt]

I typically go with the rating on the tires since that is what the tires were engineered for. Especially on my truck since I switched to bigger tires than came on it stock. But on my vette, the tires are rated at 50 psi cold. If I go over 40 psi the tire monitor sensor comes on saying I have too much pressure. I usually set those tires at 35 like it says on the door unless I plan on doing some hard running, then I raise it.

[Tony M]

Fill with Nitrogen, Nascar cars run with it.

JUST COULD not remember for chit what it was !