
Original car weatherstrips should generally be replaced every three to four years, depending on their condition. First, inspect the weatherstrips for significant cracks or breaks. If there are breaks, they can be repaired using adhesive, especially weatherstrip-specific adhesive, which makes it easy to fix large cracks. However, if the weatherstrip is severely damaged or significantly aged, it is recommended to replace it with a new one. Car weatherstrips are one of the important components of a vehicle, widely used in doors, windows, the body, sunroofs, engine compartments, and trunks. They provide functions such as sound insulation, dustproofing, waterproofing, and shock absorption, maintaining and protecting the interior environment. As such, they play a crucial role in safeguarding passengers, electrical and mechanical components, and accessories inside the car.

I believe there is no strict regulation on the replacement frequency of original car weatherstrips, as it primarily depends on daily usage habits and environmental factors. Based on my experience after driving for many years, the lifespan of weatherstrips typically ranges between 3 to 8 years, with specifics determined by parking conditions and driving intensity. For instance, if a car is frequently exposed to intense sunlight or rain, the rubber tends to dry out and crack; in northern regions with dry climates, replacement may only be needed after 5 years or more, whereas in humid southern areas, aging might occur within 3 years. It's advisable to conduct a simple check on door and window seals during each car wash. If they feel hard to the touch, show cracks, or if there's water leakage when opening doors or increased noise, it's time to consider replacement. When installing new weatherstrips, opting for original equipment manufacturer (OEM) parts or high-quality alternatives that match the vehicle model is best to prevent water damage to the interior or reduced sound insulation. Additionally, don't forget to inspect the trunk and sunroof seals, as these areas are also prone to issues. Regular maintenance can extend the vehicle's lifespan and save on major repair costs.

As someone who pays great attention to car maintenance, I check the condition of the sealing strips every one or two years, rather than just following a schedule. When the sealing strips age, they are prone to leaking water and letting in dust, which affects the comfort inside the car and may even corrode electronic components. Typically, they last about 4 to 6 years without issues, but their lifespan can shorten if you frequently use strong detergents at car washes or park in high-temperature outdoor areas. I decide based on signs: when the door-closing sound becomes muffled or wind noise increases at high speeds, it's time to replace them. The replacement process isn't difficult, but I recommend going to a professional shop to ensure precise installation—it's not expensive but can make the cabin quieter and more waterproof. Regular maintenance, like lightly wiping the sealing strips and applying rubber protectant weekly, can significantly extend their lifespan. Keeping up with these habits makes driving more worry-free and reduces future issues.

From an environmental perspective, the frequency of replacing sealing strips varies by region. I live in a rainy area where sea breezes carry salt that accelerates rubber aging, so I inspect them every 3 years to check if replacement is needed. If I notice air leaks or water seepage signs inside the car, I replace them immediately. High temperatures and UV rays are also common culprits, causing seals to crack and leak. Regular cleaning can delay these issues. Don't wait until they completely fail before taking action.


