Like the title says. What is the AS wheel backspacing measurement on the OEM wheels? It's on my 73 Soverign that I just bought. I already know the wheels are supposed to be 15" x 6", have the standard 6 on 5.5" bolt circle and be rated for at least 2600 lbs.
Every wheel post I found here (and yes, I DID look

) just mentions "zero offset" and not something I can actually measure. I'm looking at a couple of new tire and wheel combos to replace mine and I'd like to know how to check for the proper backspacing.
Thinking on it further, since it's a 6" wide wheel, would that equal 3" of backspacing from the outer edge of the rim to the hub mounting surface?
On the wheel capacity rating, could a mostly gutted Soverign use a wheel rated at 2480lbs instead? By gutted I mean that the inside is stripped out and there is just benches around the inside (instead of furnature, sink, stove, fridge, etc...) which should only weigh about half of what the original interior parts weighed.
Thanks in advance for any help,
Paul