a lot of time and effort, Megs do some tiny detailing brushes that might be handy for the corners, might try them myself, anyway this is my routine.
Sponge and use whats left from my Gold Class wash after doing car, sponge (think I will use a MF in future - naughty me

), a cloth and use one single finger for the crannies and also behind the spokes too-don't forget, then the Megs wheel brush as above, keep the rear of the rims clean and the fronts will stay cleaner. A good rinse to finish. Going to also give Hot Rims a try too, Wonder Wheels is a bit more "biting" but very very good.