FYI, I have a 99 Boxster with 59k on the clock and one leaking tube/o-ring. It's readily apparent after simply removing a wheel..look at the plug area and see if its stained/wet . I think the general recommendation (i.e. 70+% of forum members) is that if none are leaking, them leave be.
I'm still weighing whether or not to replace all of them...I'm kinda leaning towards just doing one. Might be the "cheap" way, but I'll have the wheels off twice a year and can easily inspect if another starts leaking at any time.
Joe
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99 Boxster 5spd - 64k miles
06 Civic SI - 114k miles, D.D., unbelievably reliable and fun to beat on everyday.
08 Legacy GT 5spd - 74k miles.
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