1055050
If it's spoked or a mag (anything with holes) you can put a flat surface (piece of metal)on the back side of the rim that touches the edges, then run a tape measure through the hole touching the surface. Get another surface on the front of the wheel and take the measurement... if it's a solid wheel with no holes measure the back spacing and the front spacing and add together... just round it to the next half or whole inch.[addsig]