I am putting an 18" rear wheel on a 2001 CR250 and used a new OEM CRF450X 18" rim. That bike came with aluminum spoke nipples. For spokes, I used CR500 spokes with steel nipples. The steel nipples measure 7.6mm while the aluminum spoke measures 8.3mm in diameter, so the steel nipples look very slightly smallish in the rims' spoke holes. Is this a problem or are rims made specifically for aluminum vs. steel nipples? I thought they were the same rim, regardless of the nipple material?
thanks!