had a trawl through a buell usa forum read about a guy who put iridium plugs in his 1125r said it made a real difference, anyone on here tried them

Had them in mine for a while

Seems to start a little easier from cold now

put a set in my now sold xb12 with magnecor leads and ran smoother and fired up easier,will be doing the same with the X1 when its finished..

I've never had any problem with standard plugs in either the x1 or the 1125.
Most people that spend a lot more than they had to will notice a difference because human nature says we don't like to admit we could have had the same performance for less

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2001 X1 2009 1125CR 2006 Uly X3 2010 Uly a fully Maz'd S1 and a 1991 RS1200 Westwind.

My experience is with cars but this applies to all IC engines;
Iridium plugs don't give a better spark, like platinum plugs they just last longer, so they have been adopted by manufacturers to cut quoted ('book') maintenance times, especially where access is a problem. This often means that the first factory-fitted set (fitted dry, without grease) are seized-in when the due replacement time comes! So much for time saving then!
All plugs should IMO be removed, cleaned, checked, and refitted with copper-grease annually.
So it makes more sense to stick to the recommended standard plugs and change them annually....may work out cheaper, and your plugs are always fresh!

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'98 M2 Razorback, it's a keeper.