The frequency at which you need to replace your car's tires will vary depending on a number of factors, including how often you drive, the type of roads you drive on, and your driving style. In general, however, it is recommended that you replace your car's tires every six years at the maximum. If you drive frequently or on rough roads, you may need to replace them more often. It is a good idea to consult your car's owner's manual for specific recommendations on how often you should replace your tires. Additionally, a professional mechanic can inspect your tires and provide you with guidance on when they should be replaced