I agree that narrow tires are less likely to hydroplane. Large ship?s hulls are made of 1" thick steel sometimes. You would not think that 1" thick still would float on water. Air has so much buoyancy that I have heard this is why large ships float. I believe compressed air has even more buoyancy but I am not sure.
I purchased narrow Michelin Symmetry All Season 185/70R14 tires just because they are less likely to hydroplane. I hate driving in the rain but the narrow tires seem safer.
