...They seem to make the quality cheaper and cheaper. My previous two Accords (both 1989) clutch last a lot longer. They both have the original clutch on them when we traded them in (one had 145K and the other had 187K miles on them) for a 1999 and a 2000. Just like everything else, price keep going up and quality keep going down. Pretty sad if you ask me. ...
OK, no offense but the longevity of clutch components (friction disc, pressure plate, throwout bearings, etc.) are fairly close between OE and aftermarket (except valeo and plse don't ask me why) has very little to do with how long your clutch lasts.
Factors that would affect the service life of your clutch (ignoring manufacturing defects):
(a) stop-n-go traffic: obviously the more you use your clutch the sooner it wears out, just like your brake. Conversely, your clutch pack will lasts considerably longer if you do a lot of highway driving with minimal shifting required.
(b) bad driving habits: I know many drivers would "ride" their clutch pedal w/o completely taking their feet off the clutch pedal after the shifting action has completed. Guess what? That heats up the pressure plate, wears off the clutch and also burns out the throwout bearing.
(c)improper shifting behaviour: the proper way to change gear is to get a proper "feel" for the point where the clutch plate engage/disengage, and perform a quick yet smooth shifting to avoid excessive clutch slippage.
Many a time, I saw MT drivers gingerly engage their clutch slowly(letting it slip unnecessarily)in hopes of avoiding the cause of "jerking" or "stalling", which, in reality, cause excessive yet unnecessary wear (and they wonder why they need to service their clutch ever so often)
Lastly, no clutch packs will last forever. Blaming on quality of clutch is like blaming the rubberband on your boxer shorts for not lasting longer.... (downright silly, again, with the exception of aftermarket brand valeo).
BTW: Most of the Japanese cars clutch friction disc supplied by Dakin which is famous for their quality (from A/C compressor clutch pack and pump to various friction materials used in automotive industries). I don't see why you would want to lay blame on quality of clutch materials...
Q.
***been driving MT for 18yrs+ and counting...***