I just bought new 235/15 tires, and I'm getting all kinds of recommenced tire pressure, from 34 to (60, for trailering).


The sticker on my drivers door for the stock,....tire size of 215,..... says 36.


What psi have you found to be best for even ware ?

 

Door sticker for me.

 

I generally run around 35PSI and my tires wear evenly without problems. I'm reasonably aggressive but not a late braker. And the V6 doesn't offer much in "jackrabbit" starts although I have my fun on wet roads once in a while. The truck is usually empty with just me in the cab, although I do take it on trips of 200 miles or so at highway speeds and I have hauled heavy items but generally not more than 20 miles.

And oh yeah, I never rotate tires either. Tell me I'm wrong, but in nearly 50 years of driving, I've generally never rotated them on any vehicle I've owned.

 

Same size tire I run them at 33 to 34 without any wear problems. I very rarely have anything in the bed though and have a standard cab. I like the way they ride for me a soft ride because of the tire Psi with stiff shocks.

My shocks are a bit stiff but I like that the 33 Psi cuts down on road noise coming into the cab and telegraphing road conditions to me the driver.

Softens the ride and noise even with the stiff shocks.

 

I usually inflate our cars tires to 36. Our Chrysler 300M says 30 on the door ! That's just nut's to me.

 

The sidewall has recommended PSI, READ IT>>>>>>>>>>>

 

Uhhh ... No.

It has the MAXIMUM PSI.

NOT the same thing.

RwP

 

I agree.
I'll stay at 36psi and keep an eye on them.

 

Negative ghost rider. That is maximum pressure.

 

Look - if you want the optimum pressure for any size tire, you can find weight capacity vis pressure charts on the Internet. I personally use this one:

https://toyotires2-1524598101.netdna...s_20151020.pdf

Secret is of course to determine the weight. There's scales you can use (anywhere you see "CAT scales") to weigh your truck front and back; however, you can usually cheat, take the original size tire (on the label inside the driver's door jamb); take that pressure, look it up in the chart, look for that same weight capacity on your new tire size and ... presto!

You can also go 2 to 4 PSI over at 70F ... any other temp, the pressure should be adjusted some to compensate.

THOSE charts are on the Internet also, but practically, most folks can just use the door jamb pressure / computed pressure to make sure they've got enough.

Caveats: My truck came with LT215/75R15D tires, front to 35PSI, rear to 65PSI (!!!). To carry as much weight, I need a small step above a P235/75R15; however, I don't carry the max load, so a P235/75R15 is just about right on the back. Front will take about 22PSI, though, so those will be run at 26PSI to keep the sidewalls firm enough (rear at 35PSI, good enough.)

RwP