wait till you re-fresh the suspension bushings
total different car
on street tires you can run them a little high. O have heard a lot of opinions but what it boils down to is rollover and wear - if your tires are wearing well and not rolling over, the presure is right - on track (have to get my log book but IIRC) I think I was running street tires about 46 all the way around HOT
now with it being cold you might want a little less (snow likes slightly less inflation) - and in summer watch for growing pressure on long trips - they can easily gain a few pounds when warm - at the track i can gain 6-8 psi on street tires
as the tires wear watch the inside edges of the rears - unless you drive the car (and I mean actually drive fairly aggressively) your innner edges will wear first - get on your hands and knees and look at them - OFTEN - they wear fast!
a little lower pressure will get the wear back to center more and turning with some speed will do the same thing - rotating tires (flipping on the rim) is a great way to nearly double the life of a set of tires
lastly - get a good gage - like this - it's worth it - really!
Longacre Tire Gauge Glow in Dark 0-60 psi : Amazon.com : Automotive