i,m thinking of doing the unthinkable

and taking the standard rims off my 3 door as i have some big brakes i could fit on , do the rear arches need much releivingif any to fit them? i dont want it squatting mega low as i like the original up at the back stance of the 3door.
wheel choice prob 8x17 et35 mo,s any advice on tyre size and profile appreciated thankyouplease
cheers