In this video, Detroit Speed Sales/Technical Engineer, Dan Oddy discusses the importance of wheel and tire size as well as wheel backspacing when beginning a project car. This should be one of the first steps in the build process to ensure you can get the tire and wheel under the body when lowering the car, there's enough room for your brake package, and that when you turn the wheel lock-to-lock, that your tire will not rub on the fender.