Exactly what I am after and for the same reasons.
That wouldn't be my choice either as I like a little more stability in the tyre but some tyres are very narrow for their stated size and people get away with a little plumpness. For example, I believe the R888 is very narrow compared to an Eagle F1 even though the sizes are the same.
Thanks James, I'll bang your numbers into a few offset calculators to see how they compare. That 245 up front and a 9.5" will be helping your clearance massively though which is something I wouldn't have with the 255 although the 30 offset I'd have may make up for it. How do you roll inner rear arches and why do you need to with those offsets - surely the outer arch is the one that's gonna rub on your rears?