need help with rim offset

[M3Fury]

hey all i'm trying to sell a pair of mille miglia rims 18..and i need to know the offset/width, there seems to be alot with searches...more of what i dont need, and useless and or crappy information, where can i look on the wheel to find out. thanks.

[MagnumX]

If you cant find the info online then I guess your stuck taking the measurements yourself

[al_r]

Should be stamped on the back side of the wheel; offset may be designated as ETxx.

[ozbmw]

measure the width of the rim from lip to lip then divide by 2, then measure from the inside lip to the hub mounting face then deduct the first measurement from the second

For example rim is 200 from lip to lip > 200 / 2 = 100
inside lip to hub mounting face + 140mm, therefore 140-100 = 40 ( your offset is + 40, also known as et40 or is 40)