How many miles/years should my 8.5mm Magnecor plug wires last?

[gtc]

Or is it simply a matter of verifying that their resistance is still within spec?

[Drisump]

I dunno Graham, but the general consensus is that the Magnecors are more robust than the Berus. Considering many people on this board seem to be running their original wires for 100k or more, I would think at least that. You rack up a lot of miles per year and time itself would also be a factor.....you may be able to get far more than that. Cheers