35" PSI

[Dex17]

Hey yall...just put 35/12.5/20 Falken Wildpeak ATW3 Load Range F tires on my 1500 that I got off Marketplace. Max Cold PSI is 80. Curious what PSI you guys have found best to run at? Im getting a bunch of wildly different answers trying to research it so figured I would come on here and ask. I also dont load the truck up with anything crazy heavy to ever weigh it down and would like to try for a smooth ride. Right now they are at 40psi all around.

 

[Eighty]

I have 325/65R18 tires (roughly 35x12.5), granted they're on 18" wheels. I run 38-40 psi.

 

[Eighty]

And I should probably follow up with: My door sticker calls for 38 psi for these tires. So if you're running 40 psi, you're in the ballpark.

 

[Shots]

My 35's are also on 18's, but I run about the same pressure (roughly 36-38 psi). I keep the same on my wife's Jeep on 17's.
Anything more than that and they tend to feel pretty harsh. I wouldn't go anywhere near that 80 psi unless you've got the truck loaded to it's absolute maximum capacity.

There is a way to get the "proper" pressure for your wheel though. Chalk the tire.
Basically you draw a line across the tread with chalk. While on a smooth flat surface, drive forward enough to get a few revolutions of the tire then look at the chalk line.
If it's wiped away evenly leave it at the pressure they're at. If it's wiped on the center only let some air out. If it's wiped on the edges add air.
Repeat a time or two to check it. Also keep in mind extreme temperature changes affect the tires so you may want/need to dial in different pressures for summer and winter.

 

[Lpsouth1978]

My door sticker is for 36psi with the stock 18" wheels and tires. I upgraded to 20" wheels and E rated tires and found that running between 38-40psi seems to be best for daily driving. When I am loaded up and/or towing, I will inflate them to ~65psi.

 

[Jeffjad]

Hey yall...just put 35/12.5/20 Falken Wildpeak ATW3 Load Range F tires on my 1500 that I got off Marketplace. Max Cold PSI is 80. Curious what PSI you guys have found best to run at? Im getting a bunch of wildly different answers trying to research it so figured I would come on here and ask. I also dont load the truck up with anything crazy heavy to ever weigh it down and would like to try for a smooth ride. Right now they are at 40psi all around.

I run 40 in mine.

 

[2021EcoDiesel]

I've been running 285/65R20 Falken Wildpeak AT3W's load range E on my truck for about a year now (27K miles on the tires so far) and they seem happy on my truck at 35-40 psi. I have run them as low as 32psi in the winter time and they also seem to ride fine there. If I know I'm hauling something heavy I'll pump them up to 50 or so psi just so they don't bend the sidewalls too much.

 

[Rebelguy2020]

Are you sure they are load range F, load range F is 12 ply and 95 psi, my OEM Rebel Duratrak tires are 10 ply, load range E air pressure of 80 psi.
The listed tire pressure on the truck is 55 psi on the front wheels and 45 psi on the rear wheels, I put 55 psi all around, and add more air to the rear (65 psi) if loading the bed or hauling a heavy tongue weight trailer.
There is no point of putting 80 psi in the tires, the truck would be way overloaded to reach the maximum weight capacity of the load range E tires. The Duratrak 10 ply E rated tires have two different load index available, tires with load index 125R has a max load of 3640 lbs, the tires with load index 122R has a max load of 3305 lbs. Four tires with load index 125R max load would be 14,560 lbs, my Rebel is around 5,000lbs, adding an extra 9,560 lbs of payload to reach the tires max load capacity is unattainable!

 

[mlawrence]

Try this tire pressure calculator. Tire Pressure Calculator

 

[SD Rebel]

Hey yall...just put 35/12.5/20 Falken Wildpeak ATW3 Load Range F tires on my 1500 that I got off Marketplace. Max Cold PSI is 80. Curious what PSI you guys have found best to run at? Im getting a bunch of wildly different answers trying to research it so figured I would come on here and ask. I also dont load the truck up with anything crazy heavy to ever weigh it down and would like to try for a smooth ride. Right now they are at 40psi all around.

What trim is your truck, what does your door sticker say?

Most tire manufacturers will state to follow your door sticker, but that can range widely by the trim of 1500 you have. Some have 36, 38 and Rebels are 55F/45R.

If you don't have a Rebel, the 35 - 40 range is probably fine for most tires, also if you are off too much from the factory psi, you will get a TPMS warning. This usually only effects Rebel owners trying to go down psi.

 

[HSKR R/T]

Every vehicle will be different. You will get a variety of answers here as well. Only real way to find out it the chalk test, or monitor your tread wear and adjust. I always run lower pressure in the rear by 5-7psi because there is less weight in the rear tires when not hauling a load.

 

[Dex17]

Are you sure they are load range F, load range F is 12 ply and 95 psi, my OEM Rebel Duratrak tires are 10 ply, load range E air pressure of 80 psi.
The listed tire pressure on the truck is 55 psi on the front wheels and 45 psi on the rear wheels, I put 55 psi all around, and add more air to the rear (65 psi) if loading the bed or hauling a heavy tongue weight trailer.
There is no point of putting 80 psi in the tires, the truck would be way overloaded to reach the maximum weight capacity of the load range E tires. The Duratrak 10 ply E rated tires have two different load index available, tires with load index 125R has a max load of 3640 lbs, the tires with load index 122R has a max load of 3305 lbs. Four tires with load index 125R max load would be 14,560 lbs, my Rebel is around 5,000lbs, adding an extra 9,560 lbs of payload to reach the tires max load capacity is unattainable!

 

[crusher]

try to go with what you door sticker says to put, and tweak from there

 

[RHCan]

Hey yall...just put 35/12.5/20 Falken Wildpeak ATW3 Load Range F tires on my 1500 that I got off Marketplace. Max Cold PSI is 80. Curious what PSI you guys have found best to run at? Im getting a bunch of wildly different answers trying to research it so figured I would come on here and ask. I also dont load the truck up with anything crazy heavy to ever weigh it down and would like to try for a smooth ride. Right now they are at 40 psi all around.

I contact the tire manufacture for mines and they calculated based on the original
tire size and my truck.

 

[MurphBigHorn]

Recently got new tires. Finally had to caulk test. My old tires I ran 45psi all the way around and wore out great. Now, obviously every tire is gonna be different. I don’t really want to go lower in PSI them were I’m at now. Been playing with air pressure with my new Falkens AT4w 35x12.5 20 load range E. I been running around with 40psi rear and 45psi front. With all the pollen on the ground I can see they are definitely to high in the PSI. So today I did a caulk test. These pictures below I’m all the way down to 30psi in the rear and 35psi in the front. And it still not low enough. Any one else out there running below 30psi in the rears?

This is the front with about 100ft roll. I think 35psi is good.

Last two pictures are the rear. This is at 30psi and it still is to much PSI. You can even see the pollen lines.

 

[HSKR R/T]

Recently got new tires. Finally had to caulk test. My old tires I ran 45psi all the way around and wore out great. Now, obviously every tire is gonna be different. I don’t really want to go lower in PSI them were I’m at now. Been playing with air pressure with my new Falkens AT4w 35x12.5 20 load range E. I been running around with 40psi rear and 45psi front. With all the pollen on the ground I can see they are definitely to high in the PSI. So today I did a caulk test. These pictures below I’m all the way down to 30psi in the rear and 35psi in the front. And it still not low enough. Any one else out there running below 30psi in the rears?

This is the front with about 100ft roll. I think 35psi is good.

Last two pictures are the rear. This is at 30psi and it still is to much PSI. You can even see the pollen lines.

I run 30psi rear and 33psi front on my 35x12.50r20 on factory wheels. The problem you and I are probably running into is the tread is bows from squeezing the sidewalls into 9" wide wheel. Get a 10-12" wide wheel and the tread will flatten out

 

[MurphBigHorn]

I run 30psi rear and 33psi front on my 35x12.50r20 on factory wheels. The problem you and I are probably running into is the tread is bows from squeezing the sidewalls into 9" wide wheel. Get a 10-12" wide wheel and the tread will flatten out

Didn’t think about that. Makes sense.