I have Sumitomos on my 7-series BMW and love them, although the beemer is a very different vehicle than the motorhome I might get some Sumitomos to replace the aging Michelins on my motorhome too.
'93 Itasca Suncrusier diesel towing a '05 Honda CR-V.
Bob, Pam(DW), Bridget(DD) and Christine(DD)
See you at most of the Penn State tailgates