Rim Numbers- Help!

[Gnarly Dude]

Am going to buy a second set of rims for some road tyres, could some one please help me by telling me what the offset is? This is the number stamped on the rims on the truck now.

8JY15 2218

Thanks

[Swamped]

I have no idea what the numbers mean. Just measure it yourself.
This site goes over it but its simple as.

http://www.chevellestuff.com/tech/wheel_offset.htm

[4WDbits]

Or easier to understand

http://www.4wdbits.co.nz/rimmeasurements.aspx