My tire pressure has ranged from 39 to 41 PSI on all 4 tires since the RX 350h was new on Jan 25th. I know it has a negative affect on comfort of ride and noise. Are any of you experiencing the same, and have you lowered the PSI to the suggested 33 PSI?

 

‘’My 350h was delivered with 35-36 psi cold.

Is that 39-41 psi with tires hot or cold. If cold, that a bit on the high side. I usually run 1 psi over the recommended.

 

I run 34 in cold weather and 33 in warm weather.

 

It will also negatively effect tire life.

 

While driving, so hot.

 

Really? I was always under the impression that higher pressure preserved tire life. Less rubber actually hitting the road.

 

You’ll get uneven wear with the center wearing out before the outside portions. https://www.firestonecompleteautocar...ate-car-tires/

 

Yeah, I'm gonna bring the pressure down this morning

 

Almost all new cars that I have purchased have had their tires overinflated when I picked up the car. Our 2023 RX350's tires (21") were inflated to 41 psi. all the way around. I bled them off the next day to the recommended 33 psi.

 

I run 34 too.

 

I'm assuming you're joking, as we're driving Lexus cars rather than the Hindenburg.

 

What pressure is indicated when tires are cold. Look first thing in the morning.

 

Just checked and they are showing 39 and 40 all around

 

39 and 40 is a bit high. Reduce to the recommended PSI when cold.

 

Had my 350 to the Toyota dealer yesterday for oil, rotation, etc. A bit hard ride on the way home and this morning checked = 38 PSI. So I bled them down to 33. Why do they do that?