Sunamer_Z

1 minute ago, Lexus Owners Club said:

 

good point, but I believe nitrogen molecules are larger than the oxygen molecules which are responsible for the slight drop in tyre pressure....I would agree also with the comment of checking or even better, replacing the tyre valve and if all else fails, fill it will Slime 🙂

That drop would be so slight that you wont be able to measure it with any consumer grade devices. Yes, the molecules are slightly smaller, but even if what you stated about O molecules escaping easier is true, then wouldnt it imply that you will end up with 100% Nitrogen in your tires automatically by simply keep refilling the tires with regular air (because the rate of O escaping would be far greater than that of N)?

Nitrogen filled tires is a scam. There are legitimate reasons, why you want N filled tires in an airplane or in a race car. But none of them apply to everyday driving. 

Update: I have to return the car to Carvana due to at least both right side doors and the fender having signes of respraying. Lexus specialists confirmed it today.

Hi. New member here.
I have just bought my 2016 Lexus IS 350 f-sport in ultrasonic 2.0.

On 10/12/2016 at 3:16 AM, Trevor Catt said:

Also, you can fill your tyres with Nitrogen which is more preferable than oxygen for maintaining air pressure in the tyres...

Air is 80% Nitrogen.

Probably something like continentals dws06 would be fine. They are the softest among the ultra-high performance all season tires.