Tire Pressure...46 PSI!?

I just picked up a 2014 Taco double cab off-road. The manual says around 33 PSI for tire pressure, however, the door jam sticker says 46 PSI. To me that seems high and it appears that a new sticker was added on top of my factory one.

 

Nope, that's high. I run 34 PSI in the front and 32 in the rear. Every truck is different depending on the tires, and a few other variables. If you want it to be PERFECT, google the "chalk test" and it will show you a process for that. If you're lazy like me and don't want to do that, just put them around 32-34

 

46psi is fine lol

 

Off the top of my head I believe my door sticker says 29 front 31 rear.

 

My wheels say not to inflate over 40 PSI. I checked the other door jam value under the new sticker and it was for 29 and 32 PSI.

 

Just being a stickler here but your tire says the pressure not your wheel. Peel of those top stickers and go with what the original says or do the "chalk line" test. For what it's worth my tires say not to exceed 80 psi, because they're load range E, I run them at 40 psi.

 

Looks like they put the wrong extra sticker on your truck, or your truck was destined to be a TRD Pro / Baja with the LT BFG KO's that need those pressures..... either way, go with what the actual tire says and what wear looks like..... with the stock BFG Rugged Fails, ~ 32 in the front and 29 in the rear seemed to be best... never understood why they had more pressure in the rear when its much lighter unloaded.

 

Your door sticker is for LT tires, the original sticker is for P rated. Your current tires are P rated, so go with that number. Like the other poster said, at one time your truck must have had LT tires on it. Maybe the original owner had the dealer trade the tires when he turned it in?

 

FWIW, this is the 'updated' sticker on my 2008 TRD OR 4x4...



now, I have the LT load range 'E' KO2 tires on it, which have a max inflation of 80PSI at 3190 lbs load per tire which is about twice as heavy as the tacoma's GAWR (3110 rear / 2 == 1555 per rear wheel)

I *could* see using 40 PSI or so rear if you're max loading your truck.

 

because at max load, the rear is heavier, like my 4x4 AC sticker above says, 2755 lbs front, 3110 lbs rear.

 

In case you actually loaded it. Seriously.

It's also why the suspension rake is there, so it will not be nose high when loaded.

But I agree with you. I run the rear less than the front. Unless I'm adding a substantial load.

 

Somewhere I saw a table of load vs pressure for various size LT tires. I've been looking, but not finding it...

 

Continuing with the stickler theme, neither one of them 'says' anything.

However, the tire does have a max pressure number, along with a lot of other information, cast into the sidewall.

 

OP compare your actual tire size with the sticker. Then compare pressure between the actual tire rating and the correct sticker.

 

If I remember correctly, there was a recall issued in 2014 addressing incorrect door labeling for tire pressures for the TRD Pro/Baja trucks with the beadlock-style wheels and BFG KO (D-rated) tires. Check the recall route. It's just a new sticker in the door sill and a reprogramming of the TPMS threshold pressures.

 

Recall Number
14V475000

Recall Date
08/04/2014

Component
EQUIPMENT:OTHER:LABELS

Summary
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain model year 2008-2014 FJ Cruiser and Tacoma vehicles equipped with accessory wheels and tires installed by Toyota or dealers prior to the vehicle's first sale. The affected vehicles may list incorrect spare tire size and/or cold tire inflation information on the tire placard. As such, these vehicles fail to comply with Federal Motor Vehicle Safety Standard No. 110, "Tire Selection and Rims for Passenger Cars."

Consequence
If the spare tire is inflated to the incorrect pressure provided on the placard, tire failure may occur while it is being driven on, increasing the risk of a crash.

What Owners Should Do
For the involved vehicles, overlay stickers to correct the tire placard will either be mailed to owners or provided to dealers for placement over the incorrect information on the placard. The recall is expected to begin in September 2014. Owners may contact Toyota customer service at 1-800-331-4331.

 

Toyota recommends 46 psi if the truck came with LT tires from the factory or port installed.

 

The tire rating is its MAXIMUM pressure, for use at its MAXIMUM load.

I'm not sure the stock rims on the Tacoma are rated for use at 3190 lbs each and 80 PSI. I don't think the Tacoma chassis would like 4 x 3190 == 12760 lbs GVWR, either, thats well over double the factory GVWR :-O

ok, I found this table from Toyo tires, and sliced out just the data for single tire LT265/70R16 which is what fits my Tacoma

our rear tires have 1555 lbs on them at max factory GAWR (3110/2). note thats below this whole scale. 40PSI would be suitable for 4000 lbs rear axle weight, which is 900 lbs over factory spec.

Load Limits (lbs.) at Various Inflation Pressures (PSI)

Size: LT265/70R16 (single)

1820 lbs at 35 PSI
2000 lbs at 40 PSI
2170 lbs at 45 PSI
2335 lbs at 50 PSI (max for load range C)
2500 lbs at 55 PSI
2655 lbs at 60 PSI
2835 lbs at 65 PSI (max for load range D)
2955 lbs at 70 PSI
3105 lbs at 75 PSI
3195 lbs at 80 PSI (max for load range E)​

In general, running a higher pressure than needed tends to give a harsh ride, and less traction.