I always recommend this stuff: It works great on black trim too. Especially that front cowl piece that always fades.
http://www.detailedimage.com/Optimum-OPT-M36/Tire-Shine-P282/17-oz-S1/
The Meguiars stuff is not a silicone base like some of the others but it will turn your tires brown and sling off onto the paint. Once on the paint it can penetrate in and leave stains. The dressing is suspended in a type of petroleum base that can and will damage paint. You probably won't notice it as bad on a dark color though. It will also turn your tires brown when it wears off. It's a type of drying damage done to the rubber of the tire as the solvents evaporate.
Megs does make a better tire product but you usually can't find it at pepboys/autozone.
For tires try their D170 Hyper Dressing. Its much better in terms of looks, protection, better for your tires, and better for your paint.
I use the Optimum Tire Shine. Its good on black trim too.
Some notes I have on that stuff..... check your bottle of tire dressing.
Meguiar's G75...ENDURANCE HIGH GLOSS TIRE PROTECTANT
Section 3: COMPOSITION/INFORMATION ON INGREDIENTS
NAME.....................................CAS#............................%
-
polydimethylsiloxane..........63148-62-9.....................60-80
-Distillates, petroleum,
middle, hydrotreated..........64742-46-7........................10-20
-Distillates, petroleum,
light, hydrotreated.............64742-47-8........................10-20
-Conditioners.......................proprietary.... ....................1-5
__________________________________________________ __________________________________________________
It's said that a tire dressing that contains
polydimethylsiloxane (PDMS)...
Is a
"better" tire dressing than one that contains:
Dimethyl Silicone (DMS)
But then again:
A
Dimethyl Silicone Emulsion is a water dispersable form of a
polydimethylsiloxane and
silicone dioxidemixture.