Its all about the degree of wheel cut of the steering on the coach. The manufacturer can tell you the degree of wheel cut. Most coaches have a degree of wheel cut of either 45 degree, or 50 degree and above. With a 45 degree wheel cut, you use your front bumper as a reference point for turning. You make sure your front bumper is past what you don't want to hit, like the stop sign. With a 50 degree or higher wheel cut, you use your own hips for a reference point for turning. With the 50 degree wheel cut you make sure your hips are past what you don't want to hit before making the turn. So a 50 degree, or higher, wheel cut offers a tighter turning radius.