wheel offset for 12" rims?

[chevyin]

Hey guys, Im in the process of ordering some new rims. I thought I could get the offset off another set I have here, but turns out they are 10" wide rather than 12" (16.5"diameter). The 10" wides I have here have the same tire Im planning on mounting on the new rim (39.5 TSL) so to figure my backspace on the 12's can I just add 2" to the offset? Id appreciate any help you guys could offer in steering me towards the right way to figure proper offset on these big tires. Thanks.

 

[chevyin]

Don't keep all those wheel secrets to yourselves.

 

[roadnotca]

Don't keep all those wheel secrets to yourselves.

I think everybody's at work or shopping. Me, I'm swapping the cam on my crate motor.

 

[RootBreaker]

all I did was tell them what size rim and for what truck when i ordered mine... sorry dont know the answer to your question

 

[rdn2blazer]

i have 4 5/8 back space on my 12 in wide welds. i think that is the most you can get with out it being a custom wheel.

 

[chevyin]

Thnaks guys. Gonna take the 10" rims off my other truck today, do some measuring and see if I can figure what I want/need for 12" rims. Appreciate the replies.