Chris,
Inhale. Exhale. Relax.
Just joking around...
Your trailer has 15" D rated tires (yes, probably TowMax), therefore your trailer sticker AND your tire stamp
should 'both' read 65 psi.
In a nutshell, that GS statement wouldn't apply to those of us with 15" D rated tires, but I can see why it
would be confusing. Now, that said.....
Keep tires inflated to 65, keep speed under 65, and go have fun!
No more
Terri, the Chevy co-pilot