Bluehinder

Hi,

Has anyone tried the supposed new tire pressure for runflats of 38, as opposed to 33 on the door?

Has it helped the ride? I don't see how it could make is softer, only worse, but I'm open to anything.

Has this pressure change been confirmed for sure? Is this official from Lexus?

Thanks

dseag2

Bluehinder, I keep my tires at a consistent 36psi, and other than potholes and railroad tracks the ride is fine. I have 5200 miles on my SC430 and have no complaints.

VVT-i

33 psi cold tire and 38 psi hot tire, I mean after driving for an hour and the outside temp. is around 70 degrees. Lexus got a 4 pages TSB on this thing and it can be up to 40.2 psi(as in the TSB) on the hot day and been driving for over an hour.

bengreen

I keep my 20,000 run-flats at 38psi (@ cold). Don't notice appreciable increased hardness in ride.....Same hard ride..... as it was at 33...but, the car is more manuverable, "smoother" turning....and, for some wacky reason, I don't hear a couple of the little rattles I used to.....go figure!!!!!!! p.s. don't put off your tire rotation...I think its more impt with the RFs