Have just taken delivery of my black 08 TDM900-love it already. Has some exquisite bits like the alloy frame and design of the pillion footpeg sub-frames, but blimey those great looking black three spoke rims look like their made from bloody cast iron, well probably steel. Book just lists them as ´cast´. Rough cast suggests unlikely to be alloy; usually quite smooth. Can anyone confirm or deny they´re steel??