The width limit is exceeded with a pair of 9.00 rims (aluminum) which is why Prevost went with the steel inner wheel. That is why you hit or almost hit your fenders.

It is not as easy as just changing wheels from steel to aluminum because the studs need an increase in length. I think it is OK to go the other way as long as the inner wheel "nuts" do not bottom out on the studs.

I don't know why anyone objects to the steel inner wheels. Nobody sees them. And I am certain, that except for me, nobody polishes them.