What is the average life expectancy of heavy duty ratchet strps before they have to be replaced.
Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.
This is impossible to answer. It depends on the quality of the ratchet mechanism, how well the straps grip, how tight you are tightening the straps (stretch straps and wear out locking mechanism), the amount of force on the straps (is the straps holding something down vs. holding something up), and the acceleration force on the straps (example you tie something down in the back end of your truck and slam on the brakes).