I agree with Whiteghost. When I took delivery of my RX-350 the cold tire pressure (Michelin) read 38psi. I thought this to be WAY TOO HIGH, but everyone at the dealership from my salesman on down said that 38 was where it should be. Until I hear differently, I guess I'll keep 'em at 38. Any other opinions?

 

Strange.

Our car was also picked up at the dealer with 37 PSI on them. So the numbers on the driver sticker are not accurate?

 

I think driver satisfaction and comfort are what's most important. If you are comfortable at 38, then so be it. Ray A.

 

I tend to keep mine around 34-35 psi cold depending on seasons. 37-39 psi at operating temperature seems to be the sweet spot for rolling resistance and comfort (both on the Michelins and Bridgestones) I find.

 

Check the driver side door, there should be a sticker on the PSI for your vehicle.

 

Very important video for tire pressure during seasonal changes.

 

April Fools joke?!

 

Yeah, my dealer said to basically IGNORE the driver side-door sticker (which says 33psi cold)! I'm still a little confused - 33 or 38?!
NOTE: with the RX-350, I'm looking for the most comfortable ride possible. Mileage is a secondary consideration...

 

On what date was the video posted??

 

Did you notice the date the Vid was posted?

 

Well definitely stick with the 33.

 

Most manufacturers use a pressure which is best compromise for ride/performance based closely to comfort. I've always added 4 to the recommended figure for that little extra bit of performance until I got my RX, now I use 33 (F Sport). This is a Lexus, it's not a performance car, it's not really made with performance in mind, it's made to be a comfortable cruising vehicle, the F Sport is a little firm in the suspension anyway so keeping it at the recommended 33 allows the most comfort, which is what I want now in my older years.

 

Not just comfort/performance. Incorrect PSI could adversely impact tire wear.

 

38psi cold? lol

 

My Michelin RX350 tires state that the maximal tire pressure rating is 51 psi. There would be no problem running them at 38 psi as long as they wear evenly. I usually pump mine up to 34 psi. I just filled my van tires to 70 psi.