Why Do Golf Balls Have Dimples?
A smooth golf ball driven by a tour player would go about 130 yards. As we all know the average tour pro hits their drivers around 295 yards. Why the difference? The Dimples!!
A ball with no dimples is akin to a bullet. It will fly but it doesn’t create lift. A dimpled ball creates more spin and climbs into the air more easily because it has lift from the dimples. But all dimples do not behave alike. The size, shape, depth, number of, pattern and overall surface coverage of the dimples all influence the ball’s aerodynamic lift and drag properties.
The Rules of Golf only have a few formal rules covering dimples, which has opened the door to ball manufacturers. The USGA does require that a ball must be aerodynamically symmetrical. While most balls have between 300-450 dimples some claim to have many more. The idea is to make the surface of the golf ball more uniform to improve the consistency of the aerodynamic performance.
Dimples affect trajectory but not spin. A particular dimple design can result is a higher of lower trajectory by modifying the dimensions of the dimples. Dimple patterns are designed to minimize drag. The larger the total volume of the dimples, the lower the lift. In other words, balls with large or deep dimples are more likely to produce a lower trajectory.
What does this all mean for duffers like us? Probably not much. For the more accomplished player, choosing a ball that fits their game may just shave off a few strokes using technology (plus practice).
As always keep “em in the fairway.


