Go by cold pressure on your door sticker. I run a little more during the winter to account for when it sits overnight. Lowest pressure is generally at 32 -33. Keeps the light off. Highest is around 38 once fully warmed. Good enough for day to day driving

 

I run 36psi. As per recommendation by Lexus Singapore

 

 

A lot of this depends on the type of tire you are using as well. Stock v Aftermarket. For my RCF I run 36 all the way around on the Aftermarket Michelin Pilot Sport Cup 4S. Last thing I want is to over inflate these expensive, short life tires. We all know the signs of over inflation right?

 

Michelin has a Pilot Sport "Cup" 4S??

 

Currently run 40 psi cold. it actually performs really well and the response is quite sharp. i planned on taking it down but i'll just leave it.

 

There are other great tires, but this is generally the most prevalent.
MPS4S

 

ok so it's not a "cup" tire... that PS4 has thread wear rating of 300.. not short life at all, but you're right on the expensive side

 

It's tread, guys. Not thread. It's a tire not a sweater =P

 

If you have factory size tires I would go by the door jamb.

 

36 cold. The TPMS will trigger at 31 if there is a 2 psi difference between the tire at 31 and any other tire.

 

I wonder if the TPMS will trigger if too high? I set my CT200h F Sport 215 45 17 tires at 40psi cold and the other day while on a long drive I got the tire warning... I go WTH i just filled the tires to 40 psi. I pull over safely and check it out and nada. tires hard as a rock. I think it may have warmed up to 45+ psi while hot and tripped the sensor. I get back on the freeway, and the tire warning goes away.. presumably cause it cooled down.

 

Agreed. I do the same, it feels way better.

 

235/35/19 on Goodyear F1A3, running on cold 38PSI,