Tire pressure

Clancaster23 · Mar 24, 2017

I have 285/70/17 tires. What's the recommended pressure to run them at? Anyone who has this size tire, what do you run at?

cubmedic · Mar 24, 2017

should be wrote on the tire and also the recommended tire pressure should be written on the inside of your door on your truck.

Clancaster23 · Mar 24, 2017

Side of tire says 40 psi max. Just thinking there are only certain reasons you'd run I that high. As far as the door panel pressure, mine came with the 20" wheels. I have 17" now and figure the pressure will be different with taller sidewalls.

bcbouy · Mar 24, 2017

40 psi max? what tire are you running?my nitto trail grapplers(same size as yours) are run at 45/50 min.and 55/60 min. on heavy load setting and max out at 80.

ColdCase · Mar 24, 2017

You may have passenger tires, not light truck tires. Passenger tires run at lower pressure but won't handle heavy loads, although there are some XL rated passenger tires. The tire pressure on the door is for the rated truck capacity.

I would look at the tire manufactures site, they should have spec sheets, and look up what the max tire load is at its max load rating, and start there.

Otherwise, if you don't haul much, used the so called chalk test to determine the best pressure for you.

Markcuda · Mar 24, 2017

55/60 min. on heavy load setting and max out at 80.

Your tires are LT tires, his are not.

Clancaster23 · Mar 24, 2017

They're Nitto Terra Grappler G2's. It is actually 44 PSI max, not 40 but still low compared to others. I did look at their site. Doesn't say recommended pressure, just the max under load. I don't pull anything and I have yet to haul anything heavy in it and probably won't so weight really isn't a concern. I'm mainly thinking of wear, ride and fuel mileage.

Jeff CA · Mar 24, 2017

America's Tire/Discount Tire has a computer program that will give you pressure recommendations specific to your tire and vehicle. They also do free pressure checks so just swing by. America's Tire just gave me my specific recommendation for my new LT tires. Great service there!

Raist11 · Mar 24, 2017

Clancaster23 said:
They're Nitto Terra Grappler G2's. It is actually 44 PSI max, not 40 but still low compared to others. I did look at their site. Doesn't say recommended pressure, just the max under load. I don't pull anything and I have yet to haul anything heavy in it and probably won't so weight really isn't a concern. I'm mainly thinking of wear, ride and fuel mileage.

First problem is wear, ride and fuel mileage are all enemies when it comes to air pressure. Looking at the Nitto website that load is referring to the weight of your vehicle. At least that's what it seems to be to me. Nothing to do with what you're hauling.

bcbouy · Mar 25, 2017

Markcuda said:
Your tires are LT tires, his are not.

yes,glaringly obvious.that's why i asked what tire he is running on a truck.

quietpeen · Mar 25, 2017

I go by what gives the most even contact patch....i.e. The chalk test

-B- · Mar 25, 2017

once you switch from factory ties what ever info they provide is useless go the the tire manufacturers web site they usually buried somewhere on the site have recommendations

Tire pressure

Clancaster23

Senior Member

cubmedic

Senior Member

Clancaster23

Senior Member

bcbouy

Senior Member

ColdCase

Senior Member

Markcuda

Senior Member

Clancaster23

Senior Member

Jeff CA

Senior Member

Raist11

Senior Member

bcbouy

Senior Member

quietpeen

Senior Member

-B-

Senior Member

Similar threads

Latest posts

Members online

Forum statistics

Share this page