EdMat
Well-known member
We believe you, just trying to see the full picture here. If my head would stop pounding from this covid bs I will try and look up the specs.
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Dealer set 2022 RTL tire pressures waay high - what do you use?
- Thread starter ahh-cool
- Start date
We believe you, just trying to see the full picture here. If my head would stop pounding from this covid bs I will try and look up the specs.
Thank you. :thumbup:
On the tire placard in your pic above, it confirms for all of us that your tires are meant to be LT tires (LT = Light Truck, which is a slightly different type of tire to a P tire, where P = Passenger, but I believe I can still work with the info given.
) The tire placard in your pic, the one on your vehicle, confirms for all of us that the GVWR for the vehicle is 9200lbs, with a Maximum Front axle GAWR FRT of 4200 lbs and a Maximum Rear axle GAWR RR of 6084 lbs; and it also shows TWO tire pressures, one for the front, 60psi; and one for the rear, 80 psi - but AFAIC see, there is only one size & rating of tire shown, an LT245/75R16E - correct? Still with me so far??
And in the pic above, it confirms that those LT245/75R16E tires are rated to carry a Maximum of 3042 lbs at 80lbs, right??
I must admit that I am somewhat surprised to see that the tire placard is telling you to run the Maximum Rated Pressure for the tire on the rear regardless of the load back there (altho maybe the Owner's Manual that the placard directs you to might have some more info in it?? :dontknow: ) that is not at all common in my experience; but I strongly suspect that neither you nor anyone else is ALWAYS carrying the Maximum Rated Load for that tire in the back of one of those trucks. Still, considering that you've got TWO tires on the rear axle (or is it a dually?) that means the tires COULD conceivably carry as much as 6084 lbs back there, which does match the GAWR RR. But then surely, because you're only meant to be running the one size and rated tires, you could conceivably also carry as much as 6084 lbs up front too?? Only the front axle rating GAWR FRT is roughly a little over 1/4 LESS than the rear axle rating GAWR RR AND similarly less than the Maximum Rated load carrying ability of a pair of those tires; AND ALSO, the tire placard's recommended pressure for the front tires is roughly about 1/4 less than that of the rear tires, isn't it?! :shocked:
So those front tires, which according to the tire placard only warrant 60 psi in them, obviously aren't ever expected to carry their Maximum Rated Load, are they?! After all, the Front axle rating for the vehicle is only 4200 lbs, rather than 6084 lbs - and so the tire placard recognises that the front tires are only ever going to be carrying a lighter load than their Maximum Rated Load, and so it says that you only need to put 60 psi in the front tires instead of their Maximum Rated Pressure of 80 psi! Clearly, not even the 'this one size/pressure suits all users, conditions, & loads' tire placard assumes that you still need 80 psi in the front tires cos they won't ever be fully loaded, even if it does assume that you WILL always be carrying the Vehicle and the tire's Maximum Rated Load when it comes to the rear tires... :banghead:
So like I said earlier: If you're not carrying the Maximum Load the tire is rated for on each tire, then you shouldn't be running the Maximum Pressure that tire is rated for.
However, I do wonder what 'other info' about all this is in the Owner's Manual?? :dontknow:
Don't trust my reading skills?
I've been doing it for a few years now. :2thumbs:
View attachment 210194
On the tire placard in your pic above, it confirms for all of us that your tires are meant to be LT tires (LT = Light Truck, which is a slightly different type of tire to a P tire, where P = Passenger, but I believe I can still work with the info given.
) The tire placard in your pic, the one on your vehicle, confirms for all of us that the GVWR for the vehicle is 9200lbs, with a Maximum Front axle GAWR FRT of 4200 lbs and a Maximum Rear axle GAWR RR of 6084 lbs; and it also shows TWO tire pressures, one for the front, 60psi; and one for the rear, 80 psi - but AFAIC see, there is only one size & rating of tire shown, an LT245/75R16E - correct? Still with me so far?? And in the pic above, it confirms that those LT245/75R16E tires are rated to carry a Maximum of 3042 lbs at 80lbs, right??
I must admit that I am somewhat surprised to see that the tire placard is telling you to run the Maximum Rated Pressure for the tire on the rear regardless of the load back there (altho maybe the Owner's Manual that the placard directs you to might have some more info in it?? :dontknow: ) that is not at all common in my experience; but I strongly suspect that neither you nor anyone else is ALWAYS carrying the Maximum Rated Load for that tire in the back of one of those trucks. Still, considering that you've got TWO tires on the rear axle (or is it a dually?) that means the tires COULD conceivably carry as much as 6084 lbs back there, which does match the GAWR RR. But then surely, because you're only meant to be running the one size and rated tires, you could conceivably also carry as much as 6084 lbs up front too?? Only the front axle rating GAWR FRT is roughly a little over 1/4 LESS than the rear axle rating GAWR RR AND similarly less than the Maximum Rated load carrying ability of a pair of those tires; AND ALSO, the tire placard's recommended pressure for the front tires is roughly about 1/4 less than that of the rear tires, isn't it?! :shocked:
So those front tires, which according to the tire placard only warrant 60 psi in them, obviously aren't ever expected to carry their Maximum Rated Load, are they?! After all, the Front axle rating for the vehicle is only 4200 lbs, rather than 6084 lbs - and so the tire placard recognises that the front tires are only ever going to be carrying a lighter load than their Maximum Rated Load, and so it says that you only need to put 60 psi in the front tires instead of their Maximum Rated Pressure of 80 psi! Clearly, not even the 'this one size/pressure suits all users, conditions, & loads' tire placard assumes that you still need 80 psi in the front tires cos they won't ever be fully loaded, even if it does assume that you WILL always be carrying the Vehicle and the tire's Maximum Rated Load when it comes to the rear tires... :banghead:
So like I said earlier: If you're not carrying the Maximum Load the tire is rated for on each tire, then you shouldn't be running the Maximum Pressure that tire is rated for.
However, I do wonder what 'other info' about all this is in the Owner's Manual?? :dontknow:
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BajaRon
Well-known member
Are you saying that you had the Continental on the rear and replaced it with the Altimax?
19 psi for front and 25 psi for rear is what we recommend, (though you will get other numbers recommended and, for the rear, some prefer a lower pressure). Did either tire wear unevenly across the tread? This is an indication that the air pressure is not correct. This does not apply to the Kenda OEM rear tire as it will always wear in the middle unless ridden at slow speeds for most of its life.
As far as the metal wires bending. I think you may have a misconception as to how tires are constructed. There are no wires in the sidewall. As already mentioned, the sidewall on a radial tire is designed to compress or bulge out at the bottom. It will, of course, compress more with less tire pressure. But the tire is designed to compress a certain amount. In other words, you don't want to use a pressure high enough that will reduce this compression beyond design. This will make the tire squirrely, less efficient, and give you less than optimal traction and handling.
If you are talking about the wire reinforcement at the bead. Those wires never bend, regardless of air pressure used.
The correct pressure is determined by weight carried by the tire. Most tires in the range of application on our Spyders do carry a recommended pressure of around 35 lbs. But this is typically for a vehicle that weighs around 3 times what front tires carry on our Spyders. And more than that for the rear tire which has relatively even less weight, in most cases.
In short. I would not go too much below 18 psi in the front tires. For heavily loaded Spyders I recommend 20 psi. In any case, it doesn't hurt to experiment, within reason, to see what your sweet spot might be.
Exactly! The numbers you refer to are Maximum Load and the tire pressure to carry that Maximum Load. If you are not running Maximum Load, then you don't need, and probably don't want, maximum tire pressure. It will negatively affect your ride, traction, and tire life. Just be aware that when you do load the vehicle, that you should increase tire pressure to handle that load.
Think of a wheelbarrow. When it's fully loaded with heavy stuff, you might need most or all of your strength to lift and move it. But if you applied the same lifting force when it was empty, you'd flip it over. Maybe not the best analogy for this discussion. But gives an idea of the concept of tire pressure in relation to load bearing of your tires.
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K80Shooter
New member
I would rather see a picture of the whole truck.
This is not what most people call a regular pickup I believe.
Is this a 3500 or maybe a 4500 truck?
This is not what most people call a regular pickup I believe.
Is this a 3500 or maybe a 4500 truck?
Not 100% certain, but believe this is a GM 2003 Chevrolet Silverado 2500 HD 4WD 6.6L V8 diesel CrewCab. That’s what I glean (through Google searches :dontknow
from the 1GCHK23113 on the door sticker. Basically your standard 3/4-ton truck, but with the base LT245 (single) tires.
If it were my truck on my farm, I would be running pressures at 45psi all around, and would adjust them up when towing something with a lot of tongue weight , or loading the bed with over 800 pounds or so.
from the 1GCHK23113 on the door sticker. Basically your standard 3/4-ton truck, but with the base LT245 (single) tires.If it were my truck on my farm, I would be running pressures at 45psi all around, and would adjust them up when towing something with a lot of tongue weight , or loading the bed with over 800 pounds or so.
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Woodenfish
Member
Pete many technicians don’t understand some things relating to the vehicle because for one reason. They can’t afford to buy one of every product they service.
Albec
Active member
Not 100% certain, but believe this is a GM 2003 Chevrolet Silverado 2500 HD 4WD 6.6L V8 diesel CrewCab. That’s what I glean (through Google searches :dontknow
If it were my truck on my farm, I would be running pressures at 45psi all around, and would adjust them up when towing something with a lot of tongue weight , or loading the bed with over 800 pounds or so.
Well done and exactly right. You got everything except for the long bed.
I bought this truck brand new and pulled a 4-ton 5th wheel all over the county. I've ran the same tire pressure the entire time, loaded or not loaded, and never had an issue with the tires wearing unevenly at all. Yes, I rotated them properly too.
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