Be careful when exceding the recommended air pressure especially when using a front end loader or you'll probably become your local tire dealers best customer.
On compact tractors the number one killer of the front tires is failure due to impact break in the casing from being over inflated so that it doesn't flex so bad, and the least little rock or hard bump and the tire will split wide open.
It will split in an "X" or "Y" pattern and is a dead give away for that classical failure.
I've stood right next to my cousin's Kubota when the tires folder over flat sideways and never hurt them at all at proper pressure.
Tired