The standard shock service interval typically ranges between 1,000 and 2,000 miles, depending on driving style. More aggressive driving may require servicing sooner, while casual driving can extend the interval. However, OEM helper springs often wear out much earlier. If the top smaller spring has no spacing between the coils, it may need replacement. A collapsed spring can cause the car to ride too low, bottoming out, or scraping the underside due to insufficient ride height. Regular inspection ensures optimal performance and prevents potential damage.