Yeah, sort of mushroom shape if you did a cross section, you have to run higher pressures too avoid squirm in the corners, defeating the purpose of going higher volume.
I assume a 2.2/2.3 would work on the 23mm rims. I ran fairly skinny 2.3s on 19mm and am still alive.
So the Profile would get increasingly rounded?
Hm.
So whats the maximum width you'd recommend on that rim? I'd like to soften things up a bit.