How to measure backspacing/offset??????

[6.0 p-stroke]

Is there an easy way to measure the backspacing and offset on a rim? I'm sure there is a way but I've got too much going on today to spend a bunch of time searching to find it. I got t-boned by a lady the other day and broke a rim, unfortunately my rims have been discontinued so it's looking like I'll be buying something new. However, I love the way my rims and tires stick out, it's perfect for what I want so I'm looking for other rims with the same or similar backspacing and offset, I'm looking to get something figured out asap! Who can help me out here?
Thanks in advance!

 

[tbsimmons]

With a tire it is harder.
Lay the rim on the ground front side towards the ground.
Lay a flat edge across the lip of the rim.
Measure from the where the wheel touches the hub to the flat edge.
That is backspacing.
With a tire you will either have to get a flat edge cut or eye ball it.
Or you can do it with the front facing you on the truck.
Say your rim is 10" wide, total width will be in the 11 range.
Take a tape from the the backside where the hub is touching the rim to the front.
Say that is 6".
11-6 is 5" backspacing.
Offset is distance from center.
10" wide rim with 5.5" backspacing will have a 0 offset. Closer to the back the center of the rim is positive.
To the front is negative.
Just use backspacing when looking for wheels. Much easier in my eyes.

 

[6.0 p-stroke]

Thank you! I appreciate the response, unfortunately I didn't get to measure my old rims and went ahead and ordered some new ones, I was told they will look good so I guess we'll see how much they stick out haha.