New rear end....

[Dino D]

On the front I'm running 12mm with the same rims but mine is a bit lower - best to measure yours as said above. I used some sticky tape weighted with a stone to hang down and measured the distance between tyre bead and arch gap.
Obligatory pic

 

[N4LLY]

Yep 12mm ordered. Fitting Saturday with new front tyres, pictures to follow after meeting recommended panel and paint guys to
have a look at the wheel arch crunch.

Going to be totally sorted by early spring