it may not be the type of evidence your looking for, but look at off road trucks.
those driving on sand have very wide tires to "float"
wheras narrow tires would sink.
May 2014 ROTM, June 2015 ROTM
for rally-x: '04 Liquid Grey ZX3
Build Thread: http://www.focusfanatics.com/forum/road-racing-rally/667378-thenorms-rally-x-build.html
Sold: '02 Infrared SVT