Tire pressure?

First off, sorry if this has been covered here I've scoured the far reaches of the earth and can't find a definite answer.

I have nitto ridge grappler 295/55r20 tires on a 2015 DC.
The pressure is set to about 35 on the front and rear.

The tire says max pressure 80psi.

Should I add more or keep it at 35?

 

When its dry, Go down the highway for a half hour or so. Pull off and put your hand across the tread. If it's cold on the edges too much pressure. If it's hot on the edges too low of pressure. You want the tires to be the same temp all the way across the tire tread.

 

Also seen some threads here on using chalk to make sure tire pressure is good.

 

I just found the temp thing worked for me

 

I had a gmc 4/4 that had 28psi in the front and 24 in the rear

 

Just for comparison...

I bought a stock used set of the 20” TSS wheels that came with BFG KO2’s LT285/55/20’s. The tires’ max pressure cold is at 65 psi and I’m running 49 psi on both front and rears.

I too was unsure of what psi to run until another member on here sent me a pic off the door sticker on their stock TSS.


I know you’re running Nittos... just wanted to give you a comparison.

 

Ooh, this thread reminded me to check springtime psi on my NRG’s, thanks!

I’m usually around 42 front/40 rear (empty bed), and 50/50 when I tow our camper. 35-40 over winter and freezing rain. Confirmed with chalk and hand method. I usually take a short jot on the expressway as speed changes the flatness of the tire.

 

I am a psycho, I check them once a month.

 

Thanks for the help!

 

I’ve found most people run 35-45 on their AT/MT’s

 

Since that’s an e load tire, try going up to 40psi and see if you like it.

 

That’s pretty good, so for math sake, that’s a 50% increase in psi compared to the spare. I know they are different sizes but it gives people an idea of what psi to run in an E rated tire in relation to a P rated tire. Does your truck ride pretty good? If the windows are down are you gonna bounce out of the truck

 

35 seems low to me. I have the same size tires except they are toyo rt, and I run 45-50. Mine are load range e (10 ply), are yours? I use 40 on my work truck and they are "p" tires.

 

Nitto Terra Grapplers. 275/60/20's P load rated. I'm running 45psi front and rear. 46,600 miles and the wear is even across all of them.

 

LT305/65-18 Falken Wildpeak AT3s. 10 ply E rated. I'm running 40 psi in all four tires. This is what Les Schwab tires recommended. Seems to be good wear so far.

 

They are E rated 10 ply.

 

I run 33 in front and 35 in rear. 40 when I tow my boat. I have 29/65/20. I called Nitto and they are the ones that told me what I needed to run. Give them call.

 

From Nitto....


Regarding your inquiry, based on the vehicle information you provided, the recommended replacement psi for the Ridge Grappler is 39 psi for front and 42 psi for the rear tires.

 

Here's what I've found. The bigger the boobs the more heavy duty the bra. So when she's stacked like a brick shit house you need all the help you can get to set those puppies in motion. Again, I run 45 psi in my Nitto's. Sorry but there simply is NO deconstructing my argument.

 

Bridgestone KO2 AT and they put this over the factory recommended pressure since they added the AT tires as an upgrade. 49 psi is what I’m running as suggested.

 

42 psi all the way around in my E rated Conti's.