Yeah, I just got home from a brief test drive and my car feels better than ever. I'm currently looking at my old flex disc and I see that the structural difference my be mecause of the shifting of the gears from drive to revers, etc....and that the front probably does endure more stress. Now, I'm kind of at a toss up because the rubber is what holds the beams in place, and the thickness on both were equivalent....I'm wondering that since these parts obviously last about 250k + mi. anyways if it would be worth it to replace it out. My car is currently at 275k mi, een if the extra stress did wear the disc out and cut the time of wear in half that would still give me 125k mi......I can see any of you frowning at me for thinking this way. I'm somewhat confident that MB spent that $8 million in research for this car to ensure that the endurance of the parts were superior (its just too bad that they decided to use a bunch of plastic under the hood and in the body work :0)

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1990 190E 3.0L