I've read over most all the threads on changing rims/tires out, but is there anyone that knows of a way of adapting one of the WIDE semi radials on our rear axles, doing away with the dual tires? (like one on left)

http://img0105.popscreencdn.com/161449148_alcoa-super-single-wide-base-22-5-tires-and-wheels.jpg

OR,http://www.motortopia.com/dieselworld/wp-content/uploads/2011/10/DW-1110-FRM-3.jpg

ARE these adapters?
http://www.pebblepushers.com/image-files/lil-bubba-wheel-adapts.jpg

I'd LOVE to have some and some reg width alloy ones up front to match..

Thanks Errol