Johnny

My tire pressures for the LS600 are 35 psi (rear) & 33 psi (front). I recall the recommended tire pressure on my previous LS460 SWB was 33 psi all around. If you have a LWB, equipped with 18" OEM rims, what pressures does Lexus recommend for the equivalent tires?

Thanks!

rominl

iTrader: (4)

i also believe it's 33 or 34. but having 35 won't affect anything

CEOEngr

Lexus calls for 33 psi front and rear. At every service for some unknown reason, the techs at the dealership pump it up to 38 psi, but I have kept it at 35 psi cold from day one. I find it to be the sweet spot.

AceVA

Lexus instructed dealers to set pressures at 38-40psi because there were too many people coming in with tpms lights on when the temperature got colder.

I set mine at 33, reset the tpms and put a note on the vehicle - "DO NOT ADJUST TIRE PRESSURE" when it's in for service. It rides terrible at 38psi, especially with the OEM dunlops.

DNICE1667

i keep my tire pressure at 36psi on my ls460l and the car rides real good!

sktn77a

iTrader: (2)

What does the manufacturer's decal in the driver's door jamb say?

jdanielca

Caflashbob

jmcraney

You should put a note on the "TPMS Reset Button" to not operate the button. It's really not a TPMS Reset, but a TPMS Benchmark Set button. When you operate the button it sets the low pressure warning thresholds 25% below the benchmark.

DriverSS

I'd run mine at 40 but when warmed up they trigger the TPMS warning (too much pressure). 33? Do you really want something that runs that soft, is your suspension not already cushy enough? There's also just about nothing keeping you from rolling the lip if you need to maneuver quickly or between you and that pothole. OEM's like that lower 32'ish rating, their cars have better "ride quality" and thus their recommendations. A tire is a spring, I'd rather have a stiffer more predictable one between me and the tarmac. For now I keep it at 38-39, just under that warning threshold. Tread wear pattern on my old Lexus was perfect across the tire at this higher pressure. I expect this set of rims on the 2010 will be the same. If I want a cushier ride I hit the 'soft' setting on the air ride.

Caflashbob

mckellyb

Tire pressure, while having recommended values from the manufacturer, are very much a personal thing. The testing any manufacturer does cannot possibly simulate conditions any specific car encounters, daily. Furthermore, no manufacturer can know how any specific owner expects a car to feel.

I like my tires with higher pressure for better cornering response and typically better wear. I used to run my Continental DWS06s at 38, but the Michelins on this car are at 30, and it's super soft. Nice, but they're getting air added, tomorrow, up to at least 36.

We have holes and whatnot in Fort Worth. Plus, incessant I-35W construction.

Remember, the recommended pressure is, to a large degree, the minimum required for safety, thereby masking much of the small impacts from pavement. For me, while cushy is nice, that's what the suspension is for. Tires are the buffer between pavement defects and suspension parts.

Caflashbob is 100% correct in that the tilted freeway pavement blocks are brutal in Southern California. Our motorcoach requires at least 92 PSI in the front 22.5" tires, and 85 in each of the rear duals (this is a case of weight). It's not at all pleasant coming into L.A. on I-10.