billy44bo

What air pressure are you using for your 18" tires on your 330?

tfischer

I use about 3 to 5 more than indicated on the sticker inside the driver's door.

I can't recall what those numbers are, because I just put markers on the dial of my pressure gauge for my two cars to remind me. On my SC that number is around 40psi, but I think on the RX it's around 30 or 33.

srashid

I use 35psi all around, which is about what tfischer recommended (i.e. a little more than listed on the sticker). I notice slightly sharper steering with these settings than with the recommended values.

32kcolors

33 for the RX330, 35 for the RX350