Depends on the string and how much you shoot. If you shoot a ton you will burn threw one about every year. Most people will get 2+ years out of there string. If its starting to look nasty and chewed up, GET A NEW ONE! A guy can get hurt bad when they break, ask my buudy down the road. Also if you get one early" before it gets close to the seasons" it will save you having to reset everything last minute and give you a chance to break it in.