Tire pressure ?

I have a 2003 Tacoma Pre-runner with the 6 cylinder engine and not sure what to call it but it's not a full extra cab, basically 2 jump seats behind the front seats and no extra doors for it. I bough the truck used and am not sure what extra had been done to it besides the body lift. I am currently running Nitto trail grabbers MT on the front and Nexxen Radian MTX tires on the rear. They are mismatched as the rears where wore out and needed to be replaced to pass inspection this year. All 4 tires are LT 285 /75 R16 and I feel the pressures are low all 4 are at 27 PSI. Can anybody tell me what the recommended pressure are for these tires?

 

Chalk test.

/thread

 

We had a dumpster fire thread in the 3rd Gen section, a recently posted thread in the 2nd Gen section (though resolved immediately, he did a chalk test) and now 1st Gen

 

Glad I could give you a laugh, as I didn't check the other threads since I own a first gen. Since we are going to continue this as a "dumpster fire thread" please explain the chalk test as I am unfamiliar with it. Sorry not a car vehicle mechanic just trying to find an answer to a question.

 

That post was more aimed at others that'll venture through here shortly

Here's the first video that popped up, should help -

https://youtu.be/e7zV2XrSIYU

 

Ok seems simple enough thank you

 

everybody's answer is going to be different.

 

got you was just wondering if there was a standard recommendation based on tire size and vehicle weight.

 

Recommended pressure for LT tires is around 35psi on your truck.

That said, if you're not towing or hauling stick to 30psi.

 

Ok thank you I will try the 30 PSI and the chalk test from there.

 

I did the chalk test on my 31x10.5x15 BFG KO2 C load tires and 25f and 24r cold psi was where the wear is even across the entire tread. I have a 4x4 double cab tacoma so a little bit heavier than your's.

I did the test after the tires are warmed up since that is the pressure that your tires are normally used then measure the temp the next morning to get the cold pressure.

I forgot to mention, it's been 15k miles now and the wear is nice and flat across the face.

 

28.6 PSI.

Now where the hell is the dumpster fire I was promised. lol

 

3rd Gen section as always

 

yes I try to avoid dumpster fires as much as possible on the internet.

 

They are kind of a tradition here. lol

You got good advice and the chalk test is really the best way to figure out the pressure for individual rigs. The load rating on your tire also plays a part. C's take more are then E's to keep the sidewall stable.

 

OEM tires where mayby P-tires wich carry their maxload at 35 or 36psi upto 99mph.
So for those 27psi could be right, because still oversised for the vehicle.
LT need higher pressure for the same load.
What loadrange are your LT.

If you give real axleweights or GAWR's, this " pigheaded Dutch selfdeared Tirepressure specialist" can calculate a highest pressure with still acceptable comfort and grip on hard roads. Offroading can do with lower.

 

The chalk test will give you a good starting point, but isn’t always the best pressure for every situation. Off road most people have better results with lower pressure. I have found, with my truck and my tires in slushy snow, it tracks straiter down the road with higher pressure. Also, if better fuel economy trumps all, go with the highest pressure the tires are rated at. Or if you just want maximum tire life and a good chance of decent ride and handling, do the chalk test.

 

Make a good point, but the off-road scenario is completely moot here. You only lower your tire pressure *temporarily* for the situation you're in.

Once you're back on the road, you're not going to be driving around on 8psi like you did on the sand or mud on your adventure.

 

Only if you have onboard air, then you are driving around at 8psi until you can find a gas station/make it home to a compressor.

 

Check the sidewalls of the tires. Recommended pressure is printed on them.