[fiddlybits]

ok, great.

I am curious what the pros and cons are.

I "assume" that the purpose is to protect the tubes from the spokes....but beings that that wheel is a welded spoke design, and the spokes do not protrude inside of the wheel, we were very surprised to find them in two of the five tires, as they would seem un-needed and it seems that they would just be one more item to affect the balance.

We're going to mount all without for now but put it on our revisit list.