Fwiw I've always run vehicle manufacturers recommended pressure and not had a problem. Now I'm curious if I'm under inflated contributing to my thirsty 11mpg
Tire PSI advice straight from BFGoodrich
- Thread starter CCuzj100
- Start date
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More fuel for the tire pressure fire (attached)
I run 35psi on my 275/70-18 Nittos G2
I run 35psi on my 275/70-18 Nittos G2
This is getting intense...
^ if you want to get really intense you can also consider the "+10% (or 4-6 psi) max pressure increase from cold to hot on road driving rule" to compare with your weight/pressure table results if you feel you need another data point 
Ok, let's review what we can agree on
- Tires should have air in them.
- On paved surfaces
- The tire should have a higher PSI
- The tire should not be deformed
- The tread should have even contact across the width of the tire
- 32psi at the lowest 60psi at the highest
- Trust your teeth
- When off road
- The tire should have a lower PSI
- The tire should deform
- Increased traction because more of the tread is in contact with the ground
- Helps avoid punctures from sharp obstacles
- Looks better in photos
- Somewhere around 12psi to 20psi depending on the terrain
- Your mom
- Tire manufacturers
- Want to avoid liability
- Has data that doesn't necessarily reflect real-world experience
- Use robots as customer service reps
- Air pressure changes with temperature
- Cold tires have 5-8psi less that hot tires
- Cold Hot Pockets have 1-2psi less than a hot Hot Pocket
- Known to rise over 1000psi in some circumstances blowing hot cheese and sauce all over the roof of your mouth causing 4th degree burns and esophageal distress.
- Some people are idiots.
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1-2 psi?!
You need to get your head checked my friend. Hot Hot pockets are nuclear hot. Following PV=nRT, the pressure of a hot Hot Pocket is likely over 1,000 psi. At least.
Jk, nice summary
Edited to reflect your research. lol
Haha good stuff.
But really. Judging from the number of people I see driving on severely under-inflated tires (especially as the temps dip this time of year), anyone arguing with strangers on the internet about proper inflation pressures is WAY ahead of the curve.
So we're all good!
But really. Judging from the number of people I see driving on severely under-inflated tires (especially as the temps dip this time of year), anyone arguing with strangers on the internet about proper inflation pressures is WAY ahead of the curve.
So we're all good!
that made me chuckle lol
Psi is also dependent on whether you run a synthetic oil or not
guardcompany
Shea
OP is 5 posts in and is already calling people idiots and telling people to read a book, ugh.
I had to tow a very big trailer recently. More tongue weight and gross than it's probably rated for. So I want to check my tire pressures since I hadn't since inflating them trail side. I raised them from 28psi to 32psi. I pretty much hang out in the 30-40psi range for the street on K02s. MPG doesn't change much either way but contact patch is good and I'm not trying to gain 0.2mpg at the expense of wearing the center my tires(which is common, look at jeeps in the parking lot).
re_guderian
SILVER Star
Living on the edge!!! Your guide shows min 40 PSI!!! Thou shalt surely die... 
For the OP, and from the Nitto website, in plainerer English... The rub on the forum is that very few people upgrade to LT, all-terrain tires in the OE size. Most go up several sizes in width and/or sidewall aspect ratio, which can increase load carrying capability, resulting in lower-than-50 PSI pressures needed to hold the weight of the truck. OP happened to put teeny-tiny All-Terrains on his rig, thereby necessitating the 50 PSI. Mystery solved. Man-card lost...
From Page 25 - LT275/70R18 Single 2070 @35psi
Where did I mess up?
I just run nitrogen in my tires so no need to worry about PSI. Plus I can just about fly around and over stuff , cause they like float on air.... I just have to stay away from open flames... and the jack hat that tosses his sig out the window.
Battleship
GOLD Star
What? I thought they filled them with nitrogen so we'd have five convenient extinguishers when the campfire jumps the rocks.
re_guderian
SILVER Star
Far be it from me to pontificate.... Depends on whether you go by door plaque axle weight and GVWR, or by trying to match the chart weight rating of the OEM P275/70/16 @ 29/32 psi. 32 psi on P275/70/16 is 2480 lbs (pg. 16).
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OH FOR GOD SAKE! Just when I thought I was okay with 35 psi now this comes up! I think I'll just buy a Segway. I need a hot pocket
It's a p-rated tire on a light truck, so you have to divide 2480 by 1.1. So the actual capacity is 2254. That works out to just under 45 psi on an LT tire.
