I disagree that narrower tires in soft sand is a good idea. Just increases the propensity of the tire to dig down and not float. Ever ride a bicycle in the sand??? Would you rather be on a "road bike" with a 1" tire, or a cruiser with 2.5" tires??

A runflat will increase contact patch, but obviously not as much as a standard tire- once the tire begins to self support I am guessing no more spread.





OT, but my sole experience with driving on the beach was a rental AWD in Australia... above Brisbane, from Noosa up to Fraser Island

Did you know they set up Radar traps ON THE BEACH as well as Sobriety Check Points?!?! (The latter being distinctly un-australian.)

Oh, the rental policy includes NO COVERAGE if you put the car in ANY water. Just to reinforce the point, the rental shop had a wall of pictures showing all sorts of disasters...making the one in this video look like a normal drive!