I replaced my originals at about that mileage. I can't say they were bad, but I sort of went through the whole car the first year after I bought it in '93. Had quite a few miles on it in just a few years. Owned by a salesman as a daily driver. For the cost of the substitutes we have found, as well as availability of new originals, but rather costly, I don't think they are worth much considering the labor to remove and install, and then only if they looked new.