Tire psi

[asilverblazer]

18 hours ago, ArrowsmithPML said:

Those psi values are too low for a 10 ply tire. Simple really.

 

 

No.

[newdude]

5 hours ago, jgaudet99 said:

60psi front and 80psi rear

But I am not running the factory tire brand or size!

it's load range F Toyo tires

 

5 hours ago, jgaudet99 said:

Here is an image of a quick Google search about these tires on my truck and it's exactly same psi recommendation the Toyo tires company gave me! 

 

I'm not looking for anyone else recommended psi or anything, I'm just looking to see if anyone knew a way to get rid of the factory low psi warning light, because I'm not running high psi and ruining my tires when I'm not towing! 

 

 

 

 

You SHOULD be.  IF you underinflate, you can compromise the truck's handling and stopping.  Its an 8400lbs truck.  LOTS of weight on the front end empty.  

 

Ideally you'll want 55-60psi all the way around.  

 

Tire light.  GM dealers won't help.  LIABILITIES.  Others have mentioned tools that exist.  That will be your only route.  

[Atlas]

In the motorhome world, people refer to tire manufacturer's pressure-weight charts to determine a good PSI for their motorhome tires.

 

What they do is get axle weights for the vehicle at a CAT scale or other scale. Drive on, drive off, the scale spits out a ticket with the weight over each axle. Then, you know the approximate weight per tire on that axle. Then, you refer to the pressure/weight chart published by the manufacturer and set the tire PSI accordingly.

 

Of course, you will want to adjust (and know how much to adjust) when you decide to carry more weight. For everyday unloaded ride, bringing down the PSI within a safe range that still adequately supports the vehicle's weight relative to the construction of the tire can really help with ride quality and under/over-inflated wear issues.

 

I don't see why it would be any different for a pickup. The key is the tire needs to be rated to support the load safely at the PSI you've selected.

Edited Wednesday at 09:31 PM by Atlas

[jgaudet99]

Thanks everyone for the help!

 

I'm going to stop into the scales one of these days and weigh my axels, for the time being, I am going to run Toyo's recommendations and also do a chalk test.

I have a tire shop that's going to try their scanner to reprogram and set the the factory psi values lower, and if they can't I'm going to order a scanner and do it myself!

[Chuck FB]

1 hour ago, jgaudet99 said:

Thanks everyone for the help!

 

I'm going to stop into the scales one of these days and weigh my axels, for the time being, I am going to run Toyo's recommendations and also do a chalk test.

I have a tire shop that's going to try their scanner to reprogram and set the the factory psi values lower, and if they can't I'm going to order a scanner and do it myself!

 

You may have come across this chart before and ironically this is a Toyo printed chart but it applies to all brands of tire types typically sold in north america since they build the tires off of the same standardized guide lines. Page 32 I think is where you will find your tire size and type to use as a guide along with weighing each axle individually to figure out your minimum pressure you can carry safely at highway speed. 

 

See what your tire guy comes up with as I would be surprised if they don't have a tool that can do it as long as they know how to navigate the tool to find the right area for placard reprogramming. 

 

Application of Load Inflation Tables Version 2020-7

[jgaudet99]

Thanks I'll check that page out.