The Basics

Tight strings will give more control, while looser strings offer more power. Thinner strings will give more feel (but will break more often) while strings with a thicker gauge will last longer but won’t give the same feel. Strings that produce more power will also absorb more shock load at impact. Softer strings, or strings with a softer coating, tend to vibrate less and a stiffer stringbed tends to produce more spin.

Why and how often should I change them?

Strings lose their elasticity and tension over time resulting in them going ‘dead’ – a lack of feel and power.  How do they feel? Do you like how they feel? How do they look? Look for signs of wear. Different strings, tensions and rackets have different levels of tension maintance.  Try to at least restring your racket the same number of times during a year as you play in a week!