Thanks for the replies guys. Yes I love the look of the turbines. They kind of represent a blend of my old career as a marine engineer and my current one as an airline "poilit". Wanted them in 18 but struggled to find them. These came in at £200 and decided not to let them slip out of my fingers. I need new tyres soon anyway so it seems like the right time to go with it. Time will tell......
Ian