I believe that most hear will recommend getting rid of the split rims, otherwise known as widow makers....
YES and NO.
Not all multi-piece rims are bad, only those in bad shape and all Firestone RH5* rims. It's not correct to call all multi-piece rims "split" rims or "widow makers".
Here's a tech tip with some good info about the different types.
http://www.stovebolt.com/techtips/wheels/From that tech tip here's a chart with numerous milti-piece rim designs that are OK, and the Firestone RH5*
http://www.stovebolt.com/techtips/wheels/images/49_budd_catalog.jpgI personally like single piece tubeless wheels but I also have no problem running good two and 3 piece rims. Sometimes it makes the most sense to stick with what you have.
Grigg