Is my tire pressure too high?

https://www.youtube.com/embed/j3fkDQiCuf0

 

But you filter out your engine oil like every 1k miles.

 

E load will require more PSI to support same weight as SL load. With 285/75/16s, door jump psi number is useless. I would do at least 35-37. 55 psi is way too much and will cause your tire to wear out in the middle. Also, not great for suspension because of the rougher ride.

 

Start out at 30psi, increase/decrease to your tastes.

 

I run left side 28, right side 58. Take the lean out.

 

I run this pig, 7500lbs, shod with 235-85-16 K02s at 40psi................

 

255/80/17 E load wildpeaks. About 600 pounds of extra weight, running 38 psi

 

Hmmmm, you are right. I always look for ways to simplify things and I have that whole oil regimen down to a science so I consider that easy peasy. I tend to replace tires with life left on them as I do many other things

 

I've been running mine at 33 psi but the weather changed (below 30 degrees) and then the pressure was about 31 and throwing the yellow warning light. Now I run them at 34 when its cold and after they warm up they settle in around 37.

 

The number on the door jamb is a good place to start even if you upgrade to E rated tires. The number on the tire is for carrying max loads. Regardless of E or SL tires I keep mine somewhere in between. The number on the door jamb gives best ride but may not be best for loads or fuel mileage. I find somewhere around 35-38 PSI to be about right with either type of tire.

Most standard tires show around 44-45 PSI for max loads, but with the small GVWR of a Tacoma you'll never need 44 PSI. You can't put that much weight in a Tacoma. Remember, those same tires are stock on 1/2 ton trucks and they might benefit from 44 PSI.

The 80 PSI you see on LT tires is for max load capacity on a 3/4 or 1 ton truck that weighs around 7000 lbs empty. Way more than a Tacoma will weigh if payload is maxed out. You'd only air up a 1 ton truck to 80 PSI if you had over 3000 lbs in the bed. Guys driving empty 7000 lb trucks only run 50-55 PSI in their E rated tires.

 

Made you a pressure/ axleload list giving 90% of the calculated axleload for the pressure.
Determined this to give max reserve, with still acceptable comfort and gripp.

So you " ONLY" have to determine the axleloads acurate and read them back in the list. Succes with that, the most tricky part in it all.

Cold psi/ 90% of axleload for 99mph.
20 psi / 1919 lbs
22 psi / 2087 lbs/ lowest Eur
24 psi / 2254 lbs
26 psi / 2420 lbs/ lowest US
28 psi / 2585 lbs
30 psi / 2750 lbs
32 psi / 2914 lbs
34 psi / 3078 lbs
36 psi / 3241 lbs
38 psi / 3404 lbs
40 psi / 3567 lbs
42 psi / 3729 lbs
44 psi / 3890 lbs
46 psi / 4052 lbs
48 psi / 4213 lbs
50 psi / 4373 lbs
52 psi / 4534 lbs
54 psi / 4694 lbs
56 psi / 4853 lbs
58 psi / 5013 lbs
60 psi / 5172 lbs
62 psi / 5331 lbs
64 psi / 5489 lbs
66 psi / 5647 lbs
68 psi / 5806 lbs
70 psi / 5963 lbs
72 psi / 6121 lbs
74 psi / 6278 lbs
76 psi / 6436 lbs
78 psi / 6593 lbs
80 psi / 6750 lbs/ referencepressure
82 psi / 6906 lbs
84 psi / 7063 lbs
86 psi / 7219 lbs
88 psi / 7375 lbs
90 psi / 7531 lbs

 

I would run 35 as a daily driver, unless it has a heavy payload or towing then increase.

 

I have 265/75/16 Kumho AT52s that are P rated, and I’m running 32 psi. I reset tire pressure electronics using 32. Feels good on road, will monitor wear as I rotate. I had 285/75/16 KO2 E rated tires and ran those about 50K miles using 36 psi as my norm. Wear seemed even.

 

whats your mpg ?

 

I believe your OEM tire info is off.
It's a euro-metric 265/70/16/112 @ 30 psi; not, a P-metric P265/70/16/111 @ 29 psi

 

Lol... thank u for this. In stitches laughing my ass off.

 

I always heard rumors of people filling up to “max psi” … and here it almost happened …

30w10 next for oil change

 

If that's 55 cold I'd hate to see what it is after a run on the interstate in the summer.