Offset question...

[quickdodge®]

If I'm looking at rims with a +38 offset and I decide to look at a set with a +30 offset, the +30 offset would stick out further I understand. My question is, how much? What would that be in inches? Is the offset number in millimeters? I know nothing about offsets and stuff. Thanks. Later, QD.

[Murdoc]

it's measured in millimeters.

here's an offset calculator if you need it.

http://www.1010tires.com/WheelOffsetCalculator.asp

[Arm&hammer]

I'm a wheel noob too.
I google this.
http://www.1010tires.com/WheelOffsetCalculator.asp
I hope it helps

Edit: i was beat to it.