dsc07

Anyone know what the correct cold-pressure should be on the standard OEM tires? (18" Bridgestone Turanza)

The sticker in the door jam says 33psi, but the car was delivered to me @ 38psi (the spare has 42psi). The service guys at the dealership also say 38psi. I called the Lexus customer service number and got some girl who sounded like she was in highschool and got nowhere real fast.

The tires are rated to a maximum 51psi, but what inflation is going to give me the best ride and treadwear?

Thanks in advance...

rominl

iTrader: (4)

i am more inclined towards 33psi, 38psi seems high, but i think they probably ask people to put more air to avoid possibility of hitting potholes and bend the wheels

Gojirra99

I thought you went as high as 40 to protect your HRE's ?

uthatch

I would run them at exactly what Lexus says. They were smart enough to design the car and sell it to the masses, so I'm pretty sure they know better than some service guy...no matter how much training he has. The car was designed to run at 33psi if that's what it says in the door. They acheived the fuel mileage figures at that psi and calibrated the ride at that psi-so why run a different number?

It always amazes me that car dealers insist on delivering cars with the incorrect tire pressure. Especially after the debacle Ford had!!

Mallory H.

I have the EL42 on my LS460 and I keep my tires at the recommended pressure of 33 PSI.The reason the dealer and some tire dealers will setthe pressure higher is that because with any tire with a high speed rating it is better to to set the PSI at 35 and above if you are going to be driving at high speeds which due to legal speed limits very few people do. If you are going to be a frequent flyer 80 + mph than you may want to keep the higher PSI but the recommended PSI on the door is there because the manufacture does not believe there will be allot of frequent flyers.
The higer the PSI the harder the ride too.As we are a Bridgestone Firestone Family I hope you will enyoy
the tires.

rominl

iTrader: (4)

yup but those were 19s/20s

with 18s i would never run that high (to me)

brt3

I have ours pegged at 36psi, and will probably take them down to 34psi. One thing to remember is that EVERY manufacturer that sells in the US has (it seems to me) upped tire pressures because of the Firestone/Explorer debacle. On our old (pre-LS460L) VW Phaeton, the recommended tire pressures between US and Euro versions -- with the same tires -- varied by roughly 4psi...

joedaddy1

iTrader: (1)

ours is set @ 36/37 from the dealer.. i left it there.. doesn't bother us

encore888

You guys all have the luxury of the five-position tire pressure monitor on the dash...I'm so envious, having to measure them individually myself...

rominl

iTrader: (4)

tell me about it, imagine lately there have been rain and the wheels are all dirty @_@