When I do a full wash I blow off all the remaining water with a leaf blower and spray everything down with ArmourAll Tire Foam. I then go about a complete wipe down and removal of all the foam residual with a cotton cloth. I have found it safe for all materials. I am posting a picture of it as there are allot of Tire Foams out there but this one is proven. I dont know how safe the other brands and types are.
