Posted 05 November 2009 - 09:16 AM
The mini was never designed to take such big heavy wheels,with this in mind get the correct rover cutting template from minispares which will show you exactly when and where to cut,in addition although not neccessary I would ensure all your suspension components are up to the job,and consider fitting uprated dampers and hi-los all round,this will give you the maximum of options when converting to 13 inch wheels,my group 6 arches are held on with chrome self tappers on the back and nuts and bolts on the front ( due to the fibre glass flip front ),they will require minor tweeking to fit properly and you will need to cut the space required for the vertical seam finishing strips,and drill the holes for the self tappers,its all marked out so get a junior hacksaw and a fine file and you will be fine.
Use the search facility to research all of the above as there are many usefull " how to " guides on the forum