I am also (still) looking to 'upsize' my OEM wheels - 2004 Inspiration 17" x 8.5"
I would prefer to stick with the 8.5" width (275 tires look good), but wonder if anyone knows the MAXIMUM tire DIAMETER for this vehicle to maintain (vertical) clearance? Then I can back down towards a 'comfortable' combination of wheel diameter (metal) and sidewall/profile (rubber).
Thanks for any help.