Rims

Group,
 
I just got a set of Good Year Blue streak slicks  - 22.5 x 7.5 - 13 - Today 
from a friend.
I was told i need a 6 inch rim to mount them on. I measured to where the beads 
hang across the inside it is 6 inches. So I guess that makes sense. Rims - How 
do you speck them?  I know the pattern is 4x4, 13 x 6 rim. Anyone know what the 
offset is on the rim so they do not rub?  I would like to find some one who 
will put centers on wider rims. Or a supplier of rims for racing. (Some one who 
does not want me to finance there advertising for the next year for their 
product.)
 
 Thanks for the suggestions in the past.
 
Cheers,
 
Vigil
Behind the Orange Curtain, California- USA
Tired of spam?  Yahoo! Mail has the best spam protection around