This silver Mini in link below has 'Sportpack' width arches and was converted to run 10" 'deep dish' 6 x 10" Minilite rims with ET-15 offset wheels:-
https://www.theminif...pics/?p=2549867
The genuine Minilite 'deep dish' 6 x 10" rims with ET-15 offset to fill 'Sportpack' width arches are available from Minispares:-
https://www.minispar...wheel-deep-dish
also available to special order in Gold:-
https://www.minispar...-deep-dish-gold
and Antharcite:-
https://www.minispar...ish-antharcite/
if you retain the 'Sportpack' arches you will also be able to switch back to 13" wheels if/when needed, although Hi-Lo suspension would be advised to easily adjust ride height to suit the 10" or 13" wheels option.
The 7.5" Cooper S discs and calipers for 10" wheels will also be ok with the 13" wheels.
I changed back from 13" to 10" ET-15 offset Minilite wheels a few years back but with W&P arches as it was not originally fitted with the Sportpack arches:-
https://www.theminif...pics/?p=1988594
Edited by mab01uk, 12 January 2025 - 12:29 PM.