Gs300Rus

I got rx350 with stock OEM 18 inch rims.
Today I bought Micheline Premier A/S.( all season tires).

What tire pressure should I maintain ?
I know manufacturer recommends 30 psi, but that is just for 17 inch.

Advices are highly appreciates.

Cheers.

ho0n

Lexus has 35 psi on the sticker for 18 inches, but I like to go halfway between that and the tire's listed load. It means I'll still be matching spec if any tires are running "low."

pauljcl

I have 18" rims and the recommendation is 30psi. I run 31-32psi.

alchemist

iTrader: (1)

this right here.

ho0n

My mistake! It's been a long time since I went by the sticker.

Gs300Rus

I thought 30 pst is only for 17 inch rims as they are STOCK option.

What tire pressure to keep in summer? as usually it expands when its hot.

takeshi74

If you don't have your manual or sticker you can always refer to the documentation on the Lexus Drivers site.

Link to specifications for the 2007 RX350:
http://drivers.lexus.com/t3Portal/do.../sec_06-01.pdf

pauljcl

Keep the same pressure. Just check your tires because, as you state, the pressure will increase when the temperature rises and you need to re-adjust. Similarly, in winter, you will need to add air to maintain the pressure, if the temperature differential between summer and winter is great.

smassey321

31 - 32 is perfect for comfort and tire wear. When I load up for road trips I go to 35 but I don't leave it there as it wears the center of the tire faster than the edge. I have an awd 400h which is heavier than the other RX models.

Tire wear also depends on the tire model. The Michelin Energy has a soft edge so I could run at 34 all the time with those and the tire wore evenly. My current Michelin Latitude has a harder edge and they are wearing evenly at 32 psi.

ho0n

To my knowledge, most tires today are radial steel-belted, so higher air pressure should not result in the bulging of the center. If this is the case and your tires are aligned and regularly rotated, wear should be even-steven as long as you maintain pressure close to or reasonably above vehicle spec.

satz

I use 38 to 40psi (when the tire is hot). In the attempt of making my RX 350 handle a little better....and more economically

pauljcl

... but what a terrible ride!

YWW

30psi is the factory spec for 18-inch. I set mine to 32psi because 30 seems to wear a bit more on the outer edges of the tire. If it rides a bit firm for 32, then just back off to 31.

How do you like the Michelin Premier A/S so far? I thought about getting that last week but local Costco didn't have that in stock so I went with the same Michelin MXV4 I had before.