I have a stock 1996 sp with Magtek rims, is it just me, but my rear Magtek is done in a smooth finish, but the front has rough ( bumpy spoke legs) finish, is this normal? also I noticed on other bike that their are done in a smooth finish ( see link) how is that done?

http://www.dreamgate.ne.jp/nsr/bikemonth/dec01_07.jpg

Any help or advice, thanks -Gary