Tire Pressure

I am purchasing 4 new tires for a 2012 KZ Spree 261RKS - am buying Carlisle 205/75/R15 D load capacity - I take it from all the I-net posts I have seen that the best thing to do is inflate to the max pressure (65psi on these tires) ? I've seen about as many good as bad posts about Carlisle tires - I gather that improper inflation, overloading, and improper alignment will cause problems with any trailer tires. RV tires take a beating anyhow - I've never had a blowout, but amy getting new tires cause the old ones are 6 yrs old and showing some small cracking.