I'd love a set of these in white, the only trouble is that they only seem to make 13" rims at the moment, I'd want 14" preferably or 15" if they weren't available, I had a set of 10"x7" on my old red Mini, they looked well smart, real 'old skool' fwn
I did a bit of looking around and you can get 195/55x13s, they have the same circumference as 155/70x13s so shouldn't affect performance or rub the arches, they will fit on rim width 5.5"-7". I'm not sure what size Kristian had on his wide arch, but they were WIDE 13"s.