i have the car settup for light load tire settings. Recorded is 35.8 and close to 39 in the rear. haven’t checked what my pressure were for awhile and noticed with the colder winter temps i was 5 psi less than recorded. No light ever went on.

i pumped them back to the recommended pressure but the car definitely feels bumpy and too much air. Prob will get much better MPG but wonder if that recommendations is for street tires.

what is everyone else running for everyday driving that has some type of All terrains on

 

For daily driving I run somewhere between 38-41. Pretty good middle ground for the ko2 on 18s

 

I second this query. With ko2s 275/60/20 and light load setting, I have struggled to find a guideline. I have tried to set at the car's recommendation, but seems low. Dealer told me 40 all around, but, to me, it looked like a guess.

 

You can use this calculator to recommend tire pressures when adding aftermarket tires:

https://tiresize.com/pressure-calculator/

The converted light load pressure for my 18 inch KO2 D load tires is about 43 in front and 47 in rear. Still feels a little high but don't want to risk running them too low so I just stick with it.

 

whats the risk of running too low. Usually air down when off roading and prevents sidewall punctures.

put some more miles at the newer pressure and it’s noticeable harsher. 47 seems really high

 

Airing down for low speed offroading is totally fine. This is for more everyday driving pressures on the street. I am by no means a tire expert, but I believe the correct tire pressure will ensure proper wear and keep the tires in their designed operating temperatures. Tire pressure is also directly tied to the load rating of each tire. Load rating goes up and down with PSI so you want to make sure you have the correct pressure for your vehicle weight. I am sure someone with more technical knowledge can explain it better...

 

How do you personally set your car tire pressures? To the 43 Front/48 Rear or to the 35 Front/35 Rear as shown in your Tire Pressures in the display?

I know the tire placard shows the 43/48 PSI rating, but that also shows for heavy loads in the display. Light loads are shown to be 35/35. The higher pressures bring a firmer ride, of course but has anyone thought about how lower pressures will affect wear?

I have Pirelli tires with the 20" Venom wheels with255/35R20/XL 97H

 

At normal driving speeds a high pressure wears out the center and to low will wear at the outer edges.

 

I run:
50 PSI when towing and long distance on highway with a load
38 PSI mixed driving (not towing or long highway drives)
23PSI on rough off road terrain

All on 265/70R18 BFG k02s