Gonna do plugs, should I do tubes / rings at the same time?

[schnellman]

Yes. Change the tubes and rings. If not for the mileage, then for the fact the car is nine years old. I changed mine with only 17K on the odometer because the car was ten at the time.

[insite]

i honestly wouldn't bother. spark plug tube leaks aren't THAT common. i'd wait & change them one at a time if they ever do start to leak.

[jcb986]

I have 2000 S with nearly 70K on the clock. Porsche recommends plugs to be changed out at 70K miles, serpentine belt at 60K and if the tubes are not leaking, why bother.