What’s the widest tire for an 18” PI wheel?

[GIGANTORE]

Trying to figure out how much tire I can fit on the PI wheels. Would like to get as wide of a contact patch as possible and give the ride a little cushion for speed bumps, etc.

[ZSHO]

    https://www.tacomaworld.com/tirecalc?width1=255&ratio1=45&rim1=20&width2=225&ratio2=60&rim2=18 . Z

[GIGANTORE]

Thanks for the link. Was more looking for feedback from people that have tried to stuff fat tires on these PI wheels.