As far as that center lug goes, it's got a deep rain groove. Seems like a good idea. Will it work? Who knows. And it was really more like two people trying to mount the tire with spoons. Two really big strong young people, but it whupped them.
I was more of the "voyeur in a camp chair". The hydraulic tire machine got it on with two guys working pretty hard to help. They said it was like mounting a Goldwing tire. ;)