Hy sablesurfer," split rims " is a term that refers to wheels which are not one piece, they can be two piece, or three piece, or split in the center. As to your wheel mounting studs, yes you can get new ones, take a sample with you to a good parts store and they match them up for you. Non split wheels are available for that bolt pattern, I believe in at least three sizes 16", 16.5", and 19.5", hope that helps.
