Tires: tire compatibility, chevy tahoe, tire failure

Question
is a p225/60r16 tire compatible with a p265/75r16 for use on a Chevy Tahoe?

Answer
Scott,

Emphatically, No!

That would be going down considerably in load carrying capacity which greatly increases the risk of a load related tire failure, which sometimes has tragic results.

I strongly recommend you consider another course of action.