I know this is a no brainer, but My 93LS400 did not come with a owners manual.
The tire says 44psi is maximum, but what should it have in it normally.

Thanks

 

Should be 32 psi when cold for most normal driving conditions.

If the car is fully loaded, say 4 people + luggage up it by a few psi
ie upto 34 or 36 psi.

This is as per the owners handbook.

If you are mainly just using your car around town rather than the motorway (highway) then you could drop to 30psi for a slightly softer ride.

It is very important that you only check / set your tyre pressures when they are properly cold, even driving for 1 mile will give a false pressure reading.

I hope this helps.

 

The tire pressue should be at either the driver door or inside the club compartment right side of the dash.

 

I've experimented with pressures from 29-34psi on my Turanza LS-Hs. I think 32psi cold is a safe bet. A few psi more won't hurt peformance, although it might make an minimal impact on ride quality.