(13-11-11, 01:27 PM)ghostbiker link Wrote: ........they do have a longer life but as the plugs get replaced anyway at a service this isnt realy a plus unless you plan not to regular service....
Not really sure wht you mean by that, service intervals are 6000 miles, Yamaha recomend changing the plugs every 2nd service. The NGK Iridiums should certainly last for 18000 so could be done every 3rd service - so there is a saving to be made although admittedly it only works out to be 20p every 1000 miles in terms of cost, not sure about how much value to place on skinned knucles though :lol