As modified (personalized) pickups go, tires protruding several inches (and in extreme cases,feet) beyond a truck's wheel wells has long been the hot ticket. "Why?" you ask? Well, that might forever ...
Engineering Explained on MSN

Wheel spacers & adapters - good or bad

Are wheel spacers safe? Are wheel spacers a good idea? How will wheel adapters affect handling? What effects will wheel spacers have on suspension geometry? Wheel spacers can help with fitting big ...