Also keep in mind some tire companies 32" tires are closer to a 33", and some are closer to a 31" in real world diameter.
Most manufacturers will list the actual tire diameter.
31's and 33's are typically cheaper than 32's because they sell more of them.
Also as mentioned above, if you can clear 32's you can likely clear 33's with minimul rubbing or trimming.
Just keep in mind it is really difficult to say "yes they will fit" or No they wont" because each truck, suspension, and tire is different......