KO2's - Proper tire pressure help

I have a 2011 Tacoma long bed Pre-Runner with BF Goodrich KO2's in 265 / 75R / 16's.

My son has a 2005 Tacoma long bed in 4x4 with the same tires and size. We just noticed his tire pressures are around 70-75 psi while mine are 40 psi. I know they have a 80 psi max.

Curious what others with the same tire size run in terms of PSI. We live in Florida in case that makes a difference.

Thanks!

 

Definitely do not run max psi for every day driving. The 265/75r16 is only a little larger than 265/70r16 so you should really just check the door sticker.

I had 265/75r16 Goodyear’s for something like 40k miles, they wore evenly with me simply following the stock recommendations which was around 30-32psi.

Tire wear is based mostly on the load on the tire. If you have a heavy load, you should air up, but this is honestly not worth it for our trucks and their payload capabilities.

 

Check out the "chalk" method. Basically rub a bunch of sidewalk chalk on the tred and roll forward a few rotations and see how the chalk rubs off.

 

I run 32 psi on my 33s I run.

 

Those tires are designed to be used on 3/4 and 1 ton trucks with curb weights around 7000 lbs and GVWR of over 10,000 lbs. Even on those trucks you'd only run 50-60 PSI under normal conditions. You'd air up to 70-80 PSI only when loaded to the max.

On a Tacoma with 4000 lbs curb weight and around 5300 lbs GVWR around 30 PSI is fine unloaded. No more than 35 PSI when loaded heavy. The wheels on a Tacoma aren't rated for over 60 PSI. If your son has 70-75 PSI in them he is risking wheel failure.

 

I have the same size (E load) and run 42 psi day to day and target 17 on the trails. Haven’t done the chalk test. I have about 7k miles on them - drives well and my untrained eye says they look good and are wearing well. I tried 35 for a bit but I definitely like the feel of 41 better.

 

I have sane tires also. Dealership filled to 35, but it should be around 50psi or so. I thought it said it on the inside door too ... I could be wrong.

 

When I had KO's I ran them ~33 I believe. Slightly more up front and less in the back.

 

A lot if things are going to depend on your tire pressure. E or C rating, or even temperature outside. The chalk test is the best way to get the best pressure.
https://youtu.be/MIvbFgrH0IQ

 

Thanks every one for the input and direction. I’ll adjust the psi tonight. Extremely helpful!!!

 

I have 285 70 R17 and run at 26. Kills my MPG, but they ride nice. When I bought the truck from dealer they had them at 65 and it was like riding on wagon wheels.

 

No way in hell I'd ever run over 35psi on a DD. Barring a max load situation. Where is the notion coming from to run that high of pressure?
I'd like to see a chalk test on an unloaded Tacoma w/75-80psi...

Don't confuse tire manufacturer's MAX pressure with the vehicle's recommended tire pressure listed on the door jamb.

https://tirepressure.com/bfgoodrich-all-terrain-t-a-ko2-tire-pressure#LT265/70R17

 

about 20 yrs ago now, the Military had a tire rep from Michelin come in and give us a tech briefing as at the time all our tires were Michelin, and even back then he briefed the chalk method, basically veh weight/load always different between the same veh even,also different tires will have different results with the same pressures. I've been doing it ever since to see optimum tire pressure.

couple wide chalk marks across the face of the tire, move in a straight line forward and backwards about 20ft each way, the chalk remaining should be approx 1 inch from outside edge, this helps achieve an optimum tire contact patch,if pressure is too high it results in, reduced braking distance, poor traction in winter/off road, and wears out the center of the tires tread.

tire pressures between front and rear will be quite different,

inside the door recommended pressures is a guide line to protect the manufacture, and as a general rule that number is based on a fully loaded veh, as in their eyes over inflated is better incase the owner has veh fully loaded with passengers and payload,

typically the door info is too high for a daily driver as well

 

If you are running E-rated, doing the conversion from factory tires and recommended psi, you should be running 37 psi. This is not an uncommon question and there are other threads that explain the conversion.

If C-rated, sticking to the factory 32 psi is probably fine.