I haven’t run 32s myself, but I’ve been looking into it for a while. From what I’ve read, if you are going to run fast trails and or open desert terrain you shouldn’t have much trouble. If you run rocks, mud, technical trails you are are going to want some gear reduction. Going with a light tire will do a lot to mitigate the issues associated with the larger tires. The bigger concern over the axles and diffs will be your clutches and belt, but larger tires add stress to almost everything including brakes, steering components, driveline, suspension bushings, etc. Going to a 32” is not a huge jump and lots of people do it, but If you drive with your foot to the floor all day you’re going to break stuff.