I recently installed this class 3 for use with a 500 lbs motorcycle carrier. You did not state the applications (25' trailer or a bike rack?).
You can look at the trailer website and see pictures of several installations of everything they sell. What exactly is the cutoff for an oversize tire I'm not sure. I'm planning on a 265/70-17 or 31.6 " . Worst case I will put an undersized tire down there. I'm still carrying my original factory spare never been mounted.
I would get this if you plan on towing a large trailer. Both would seem to have similar size constraints for a large tire.
I will also comment that I bought a Draw-tite rear hitch and a Curt Front hitch (based on price). Both had similar "apparent" build quality but the Draw-tite has better mounting hardware (specifically required spacers). On the Curt I had to fabricate spacer plates to avoid bending the frame mounts.