Tire Pressure...46 PSI!?

Ditto. Dealership filled my tires with like 30psi and they looked low. I checked the door, the tire, and then called the tire manufacturer to find out it's 50psi.

Cheers

 

46 PSI sounds like 2170 lbs per tire per that LT tire pressure/load table I linked and copied, which is 4300 lbs per axle, way past the GAWR of the Tacoma.

 

Toyo has a good one on their site...here it is in PDF

 

yeah, thats the one I quoted from and linked after that other post. It suggests LT265/70R16 should have 30 lbs at the Tacomas max GAWR. 45 PSI is suitable for a 8000 lb GVWR truck. I wonder why Toyota says to put 46 PSI in LT KO tires ?

 

Higher PSI in the tires will wear the center of the tire out among other things. The sticker on the door unless it is the wrong one will yield the safest results. I run 32PSI in my E rated Trail Grapplers. I just measured the tread depth after 18000 miles and it is within a 32nd from edge to center which equates to equal wear. In those 18000 miles I have less than 1/8 inch of tread wear. The tire pressure will also significantly effect ride quality and handling.

Also keep in mind (Unless you are Roger Godell and the NFL) that tires will increase in PSI in hot weather and lose pressure in cooler weather. I have calculated a total of 8% increase or decrease due to temperature.

 

the cold pressures have built in assumptions about temp expansion.

OTOH, I do wonder about the difference between between 'cold' on a tahoe winter morning, and 'cold' on a central coast summer afternoon.

 

Same tires here and I run them at 38 psi. 35 was a little too squishy and over forty got progressively stiffer than I care for. I measure the tread every so often and they are wearing evenly. 12k on them so far, rotated every 5k.

 

The door sticker mentions LT265/70/16. Besides BFG, I cannot find another 265/70 tire that is LT rated. Could be wrong.

 

So I am taking up an old thread rather than posting a new one.

Why did Toyota bother to put LT tires on a Tacoma? Their load capacity is far beyond the capacity of the chassis. There are many great all-terrain tires in lower class see that would seemingly be perfectly adequate.

 

Got an example of a P rated tire that can actually survive off road as well as an LT? I've personally never heard of one but am always willing to learn.

 

the actual load capability of a tire is depedenent on the pressure. the LT load range D or E tires are capable of holding much higher pressures for heavier loads, but if you run them at tacoma typical pressures, they are quite suitable for the tacomas weight. the stronger sidewalls are far more durable in offroading.

 

265/75r16 KO2 E-rated here...I run them at 35 psi on the street. Anything over 40 psi the back end bounces around like crazy on the smallest of bumps in the road, it's actually kind of terrifying on the freeway.

 

I run my spare at 46 PSI

 

How have your tires worn while running 50 PSI?

 

How have your tires worn while running 50 PSI?

 

The main reason i think Toyota put the LT ko2's on those special tacomas like the TxBaja was simply because "OFFROADING BRO" and yah they have a better life and strength with more plys in the tires.

LeftCoastNerd basically covered it already.

 

I run them at 40psi, they basically look brand new.

 

Tire pressure is influenced by a lot of factors including tire size/type/use/terrain/weather and just plain personal preference. There is no singular answer.

 

I have the Baja from the factory but I haven't had the stock tires on it at all except for the 25 mile drive from the dealer to my shop. Been running E load range mud tires on it since day 1 at 45 psi all the way around. No funny wear and no problems. And never a retard tpms light.

 

GAWR is static; dynamic loading is the engineered part of the tire placard.

Toyota also didn't account for de-rating P to LT.
P metric are derated at by a factor of 1.1 when used on suv/trucks. P/1.1=LT

P265/70/16/11/SL is 2,216 lbs @ 29 psi and 2,326 lbs @ 32 psi.

For LTs
2,216/1.1=2,015
LT/265/70/16 2,034lbs @ 41 psi

2,326/1.1=2,115
LT/265/70/16 2,136 lbs @ 44 psi