NGK Platinum life expectancy?

[Schmutzler]

I just installed a set of NGK Platinum plugs in my '87 turbo. What mileage should I anticipate changing them at? Also, what mileage should I anticipate replacing my MSD 8.5mm wires? I put those one with the spark plugs last weekend.

 

[chevyeater]

My father got 158,000 miles out of the NGK plats in his Pontiac Bonneville.

 

[Idealsupra]

pull them out and run coppers or iridiums.... platinums SUCK.