At Tennis Gear we do a lot of restrings. Almost everyday I am asked by someone “how often should I restring my racquet?” . We the answer is sometimes a difficult one to answer and depends on a variety of factors.
However the common rule of thumb is to restring as often per year as you play per week, but at least twice per year. This is just a rough guideline. Some types of string lose tension faster than others, heavy spin hitters wear strings out much faster than flat hitters, and some players seem quite happy to let the strings decide when to be replaced — by breaking.
For all you tennis string questions, speak to the tennis specialists at Tennis Gear.