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Started By
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Car door panel tire pressure says 30 psi. The tire says 44 psi. I’m confused.
Posted on 10/5/25 at 5:10 pm
Posted on 10/5/25 at 5:10 pm
(no message)
5
Posted on 10/5/25 at 5:13 pm to Commander Rabb
44 is likely the max pressure. I go with what my car says usually.
Posted on 10/5/25 at 5:40 pm to Commander Rabb
Door sticker is what's recommended for your particular vehicle, tire is the max pressure for its load capacity.
Posted on 10/5/25 at 8:33 pm to Clames
Same tire as original?
Posted on 10/5/25 at 8:43 pm to Clames
quote:
Door sticker is what's recommended for your particular vehicle, tire is the max pressure for its load capacity
If you go up a size or more from what was installed from the factory, is the same pressure on the door sticker used?
Posted on 10/5/25 at 8:48 pm to meeple
quote:
If you go up a size or more from what was installed from the factory, is the same pressure on the door sticker used?
No, the door sticker has the tire sizes and the pressures listed as the OEM specified.
Posted on 10/5/25 at 8:59 pm to Clames
How should pressure be adjusted? I went up a size in my van, and Don has gone up a few in a truck.
Posted on 10/5/25 at 9:06 pm to meeple
The tire manufacturer might have some recommendations based on your vehicle. Usually, larger tires need less pressure but it's basically a matter of trial and error, seeing how the tires wear. If you have access to a good thermal imaging camera you might be able to figure it out pretty quickly but that's not something many people can use.
Posted on 10/5/25 at 9:06 pm to meeple
Go up to the max it says on tire.
Posted on 10/5/25 at 11:37 pm to meeple
I inflate to the pressure indicated on the sticker regardless of the tire size that is on the vehicle. That is the pressure the suspension is designed to handle most efficiently.
Remember, that pressure is cold tire pressure and not the pressure after you have driven to the gas station. I always put 5 pasig exter in the tires at the gas station and then bleed to the desired pressure the next morning when the tires are cold.
Remember, that pressure is cold tire pressure and not the pressure after you have driven to the gas station. I always put 5 pasig exter in the tires at the gas station and then bleed to the desired pressure the next morning when the tires are cold.
Posted on 10/6/25 at 9:28 am to Commander Rabb
If in doubt, chalk test.
Posted on 10/6/25 at 12:27 pm to Commander Rabb
This article written by Baton Rouge auto repair shop (AgCo Autmotive) owner will answer all your questions on Tire Pressure and then some.
I follow their practice of inflating tires 10% lower than the max rated tire pressure rating on the tire, when cold, for the best combination of extending tire thread life and ride comfort. But inflating tires to pressure, when cold, on the placard on in inside of the door, will likely give you the most comfortable ride.
What is the Best Tire Pressure?
I follow their practice of inflating tires 10% lower than the max rated tire pressure rating on the tire, when cold, for the best combination of extending tire thread life and ride comfort. But inflating tires to pressure, when cold, on the placard on in inside of the door, will likely give you the most comfortable ride.
What is the Best Tire Pressure?
Posted on 10/6/25 at 12:33 pm to Spankum
quote:
I inflate to the pressure indicated on the sticker regardless of the tire size that is on the vehicle. That is the pressure the suspension is designed to handle most efficiently.
That's not how suspensions work. A less inflated tire will give a better ride but at the cost of MPG and tire wear.
Tire load rating is based on the tire and only the tire. It is how much weight the tire can safely and efficiently hold. Modern "new" vehicles tend to have a higher pressure rating than actually needed. It's to help the vehicle be the most fuel efficient because they are trying to squeeze as much MPG out of every vehicle to meet fleet CAFE standards
Of course there are always caveats. Low profile tires should not be underinflated because there is little to no side wall. You want to protect what little there is so you have a lot less room to play with the inflation. When towing something it's a good idea to slightly over inflate your rear tires, This is to make up for the additional tow weight.
There is an actual calculator you can use to determine the adjusted tire pressure based on a different tire size. LINK
This post was edited on 10/6/25 at 12:34 pm
Posted on 10/7/25 at 5:42 am to Commander Rabb
If they are oem tires go with the door. Most tire manufacturers have a number you can call to ask, but they will usually recommend the door pressure.
Posted on 10/7/25 at 6:28 am to OceanMan
I thought every tire has a pressure stamped right on the tire
Posted on 10/8/25 at 6:52 am to Bayou
quote:
I thought every tire has a pressure stamped right on the tire
That is the maximum pressure that the tire should have which should only be done under maximum load. That will almost never be what you should run for daily driving.
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