What size tire using 15x6 wheel?

but...... had you thought about 3.375 offset, on a 6" rim? is that even possible?
i do agree about listing backspace not offset. listing offset is about as useful as when people measure rear axles by the casing width, what about the variations in halfshaft size, brake drum/disc thickness etc. why not say wheel mounting face to wheel mounting face (or wmf for short). that's the measurement that you can work with.
neil.
I quite realize what a six inch wheel with that kind of offset would look like. Depending on which way it was offset , it would look like a dually wheel, ridiculously deep dish, or like a toronado/eldorado wheel from the sixties. It was just my feeble attempt to point out that technical terms matter, and an excuse to rant about "offset".
And i also agree with you about the rearend measurements. Other than suspension mounting points, it really only matters where the wheel bolts on.