New Tires?

the test mules for a lot of the tire co. is raceing thanks to the ama and d.o.t tire rules i bet....so guys like us with 600 lb older bikes are getting squeezed outta the concerns...except for throwback tires designed for our older frames ans suspensions...ie h-d bikes probably.....as has been stated try a base setting and adjust to the turn in and powering through a corner feelings...it's a big deal to have the right pressure for each,bike.rider,style of riding......i never remember checking this too much/often in my youth.....lucky i'm here ...cause once i started checking regularly and after sitting periods and felt the difference in setting my tires for my style...nothing else will compare to right set up......
heres a good question.....how much does tire pressure change on fast rides....hot days...cold days....and how does it change...up? or down?

2000 and up dunlop 401 30 front 32 rear recomended pressure ride good wear good at or near this pressure just my .02
Thats where I run my 1200 sporty,1000 kaw,700kaw etc,etc

where can you find tires for these bikes..?