Join Date: May 2005
Location: Kansas City, MO, USA
Re: Spark Plugs
No noticable difference in performance or mileage. I think my first set of platinums I ran about 30,000, then I tried the iridium and I'm sold.
1972 Honda SL 125 (1 st bike)(rest in peace)
1974 Honda CB350 F1 (smoothness personified)
1973 Honda CB350 twin (unsafe at any speed)
1971 Kawasaki H-1A 500 (wheelie King)
1975 Honda GL1000 (4 into 1 header, Vetter fairing)
1981 KTM 420 Enduro (fast and smooth)
1979 Yamaha 750 Special (suprisingly fast)
1981 Honda GL1100 Interstate (rough rider)
2000 K1200LT ICon (gone but not forgotten)
2003 K1200LTE Silver Lightning 131,637 miles 07/01/13
Gear Up Every Time You Ride !
The Skin You Save Will Be Your Own !
I'm sorry but the laws of physics prevent me from going any faster than the vehicle directly in front of me !