To Z the insides of the wheels, I just did it while I was rotating the tires. As I took them off, one by one, I rolled them over to the car wash area and scrubbed them out completely front and back. Then before I remounted them I polished them up with the Z. It was also a good opportunity to scrub out the wheelwells with a stiff brush.
People give you funny looks when you're doing your own car maintanance in an apartment complex like this....
People give you funny looks when you're doing your own car maintanance in an apartment complex like this....