PSI for KO3 / all-terrain tire?

[mister_mcgoo]

Hey guys,

I just recently had a set of KO3’s installed on my SR5, I was just curious what pressures most people here are running on a heavier duty all terrain tire?

Thanks!

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[timelapse]

Size? E or C rated? I ran 35psi cold for 275/70/18 e rated KO3. That’s about the minimum you can go for safe highway speeds, etc.

I ended up getting rid of them after 5000 miles. Running 33psi for SL rated G3’s.

 

[mister_mcgoo]

Size? E or C rated? I ran 35psi cold for 275/70/18 e rated KO3. That’s about the minimum you can go for safe highway speeds, etc.

I ended up getting rid of them after 5000 miles. Running 33psi for SL rated G3’s.

Thanks for the reply! Mine are 6 ply, so I’m assuming C rated.

 

[timelapse]

Thanks for the reply! Mine are 6 ply, so I’m assuming C rated.

Sweet. They don't offer the c-rated in the 18" size. I ran 2 sets of KO2 C-rated on my 5th gen and loved them. I'd say stick with the stock 33psi. Might want to experiment at 34-36 to see how the slightly stiffer 6 ply sidewall performs at highways speeds, etc.

 

[danimaldaisy]

Hey guys,

I just recently had a set of KO3’s installed on my SR5, I was just curious what pressures most people here are running on a heavier duty all terrain tire?

Thanks!

I’ve had those tires before. Yours are c rated. The magic number for me was 37.5 all the way around. I’ve had these tires in 285/70/17 on my 2017 sr5 and my 2021 trd off road. Both had bilstein 5100’s.

I just bought a new trd sport. I refuse to put spacers on it. I’ll wait for bilstein again. I’ll probably figure out the tire and wheel I’ll go with and store them in the garage until it’s ready for a real lift.

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