I had a 2001 Gsxr 1000 with 48K and never ever touched the coils/wires on it. QUOTE]
+1
Oh let me clarify.... replaced the stock plugs at 7,500, then the next change was at 24,000.I replaced my first set of Iridiums at 24,000 miles, but I didn't really need to and I'm about 30,000 on my current set.