Maybe this question is better suited for the 10" wheel thread, but I've clicked through it and haven't really found what I'm looking for.
I'm currently fitting hi-los to my Mk3/4 Mini and I'm seeking a pretty specific 10" wheel fitment. I will be buying new arches to suit. What offset or backspacing would I need to achieve this width? I am aiming for 10x6 wheels but I'm having a hard time estimating.
(The last car is Bart Smith's race car - a little bit less aggressive but certainly still fantastic. I guess I could ask him directly, too)