Metal
Becoming less and less common, the metal spike is a still used by many tour pros. Metal spikes have longer sharper spikes that give more traction on the course than plastic. However, metal spikes are infamous for tearing up greens and fairways worse than plastic. Under the rules of golf, players cannot repair spike marks on greens, so plastic spikes have become the common choice for club players in today's game. Metal spikes may also prove uncomfortable on hard ground and cause some discomfort.
Many golf courses ban the use of metal spikes on their greens, so it may be worth checking ahead if you are going to play another course or abroad to see whether or not a switch to plastic spikes may be a good idea.
Plastic
Interesting how drivers have gone wood to metal, yet golf spikes have gone metal to plastic. The plastic spike is now by far the most common spike found on club golfers shoes. They are more lightweight and are far less likely to tear up a green. The wider size of the spike spreads the weight of the player across a wider area, creating less pressure to dig up turf.
Ideal for hard summer conditions, the technology of plastic spike design is advancing so that soft spikes offer the same or greater amounts of traction as more traditional metal spikes. Easily changed, the plastic spike will be found on almost all new golf shoes on the market today and is a safe choice.
Fitting New Spikes
Not all golf shoes have the same type of fastening system so when you are swapping spikes, make sure you have the right type of replacement spikes. A handy guide can be found on the Champspikes.com site.