Meguiars Gold Class Endurance. It's a wipe on, not a spray, so it doesn't get anywhere else (I *HATE* when people spray stuff at shows and it gets on my car! No matter if it's made not to, if the wind blows, it carries). I put it on with an applicator, give it a minute or so to soak in, then buff with a towel (basically, I wipe it on a tire, move to the next and repeat until I get back to the first tire then buff). I have chrome AFS heritage style wheels, so it's safe for chrome. Also, since it wipes on, it never gets on the rims anyway.
We use Meg's NXT Insane shine on the DD, because it's easier (and I make my Dh detail it since he drives it 99.9% of the time and he prefers easy to use products).