Nitto Ridge Grappler Tire Pressure ?

[uscraptor51]

Looking for advice and understanding on setting tire pressure.

Just went from the stock BFG KO2’s 315/70/17 C to Nitto Ridge Grapplers 35/12.5/17 E. OEM tire pressure recommendation is 38psi. Local tire shop who installed the RG’s recommended 50psi which seems high?

 

[4wheelinAZ]

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Looking for advice and understanding on setting tire pressure.

Just went from the stock BFG KO2’s 315/70/17 C to Nitto Ridge Grapplers 35/12.5/17 E. OEM tire pressure recommendation is 38psi. Local tire shop who installed the RG’s recommended 50psi which seems high?

Had grapplers on my Tundra. Loved them . But there’s no freakin way I ran 50 in those suckers. About 37-38 was the sweet spot

 

[WTX]

Tire shops always balloon out the tires to whatever it says on the sidewall. Just under 40 should work

 

[wweaver]

What others have said. Stick with 38ish psi I have ran all ranges C D and E tires on several different raptors. Stick with 35-40 and leave it alone.

 

[moog5050]

I ran mine at 38 on my jeep. Loved them. Trying the Falken AT3W this time on the raptor.

 

[leinad1904]

*I'm not a mechanic by trade*

But I took a shop class in college a long time ago and I remember them telling us in most cases you should still use the same pressures indicated on the door jamb sticker of the vehicle. Most common exception would be when towing or hauling a significant amount of weight you'd want to add air to the back tires. Following this rule all these years, I've never had issues with uneven tire wear caused by tire pressure.

 

[uscraptor51]

Thanks for the help!! Found this on Nitto Tires:

https://www.nittotires.ca/sites/default/files/2017_load_and_inflation_tables.pdf

 

[uscraptor51]

BFG doesn’t seem to have the same information as easily accessible on their website. Is it a correct statement to say the BFG KO2’s C are rated for a max load of 2,536 @ 45 psi?

 

[heybear]

it depends.

tire pressure isn’t an answer, it’s a tool to achieve specific goals.

off-road? air it way down.
traveling empty on the street and want a smooth ride? air it down.
towing or hauling stuff? air it up.
road tripping and want mileage? air it up.

think what you are doing, and what you’re trying to accomplish. the answer becomes easier.

that all said, 50psi is weapons grade dumb

 

[Mike T]

I chalked mine and 45 psi seems to be it.