Never use Armorall on a motorcycle seat!!!!!!!!!! That's the voice of experience!!! Odd things happen when you use the breaks, especially if your wife is on the back!!
I haven't ever had a set of tires long enough for Armorall to allow tire checking but I have seen a lot of users wonder why there dash boards cracked. It only makes things shiny and slippery, it isn't a UV protector. I use the STP protector with the UV guard and haven't had any problems but I really like the idea of the shoe polish. Don't know if it has any UV protection or not.