Oil based silicon (dimethal silicon) is bad for your car. It embeds itself into the tire's rubber, prevents blooming, and can get on to your paint, wreaking havoc. Even worse, it is hard to get off your tire once its on. Most retail stores sell this type (ARmor all, Meguiar's, etc)

There are only a handful that use the one that is water based (polydimethal silaxone). This one does not embed, does not harm paint, does not preven blooming and comes off easily.

I use Zaino's tire dressing which uses this compound. 303 protectant also uses this.

The shine is nice and satin and not too reflective.

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