The answer to this question largely depends on your driving habits and overall vehicle maintenance regimen. If you typically drive your car hard and frequently engage in spirited acceleration or braking, then it may be worth considering replacing the engine mounts. On the other hand, if your car is generally well-maintained and you rarely push it to its limits, a stiffer mount may not be necessary. Ultimately, it is best to consult with a professional mechanic to get an accurate diagnosis of your car's mount deficiencies.