need rim help on stock 1985 K5

[adamforsythe]

Hello,
Well the time has come to look at rims. I need some specs on a STOCK K5. What is my Bolt Pattern (mm), and Backspacing (in)?
Thanks
Adam

 

[big83chevy4x4]

bolt pattern is 6 on 5.5", not sure on the backspacing.

 

[adamforsythe]

Hello,
does it matter what my backspacing is? I know if I run a small backspacing my bal joints will not like me very much. Could I run 4.75 backspacing?
Thanks
ADam