Look on the tire sidewall -- if you have a front loader and/or carry implements you can run the max pressure quoted on the sidewall. That is standard practice across most types of construction equipment and tractors. Some people will dial back a few PSI in specific scenarios. If you have to ask why and how much, then you are probably not one of those people.
KIOTI CK3510se HST Open Station w/FEL, RK24 HST w/FEL & Backhoe, DEAD-NH TC33D HST
My RK24 with R4 tires have the following Max PSI on the tires: Front 10
Rear 25
That's about where I leave them for good all around use. But, I do normally have the FEL and backhoe on my tractor, so the tires are ready for max weights front and rear. Your usage may vary from mine.
Cowboy, thanks for double checking, I was not looking to going out in the cold to double check....Which part of Ohio are you in?.....I am 15 mile or so East of Cleveland.
mike