[link=http://www.rcuniverse.com/forum/search.asp?appid=]Forum Search[/link]

Select, RC Tanks forum in right hand box

Type Zimmerit in left hand text box marked "Search Term"

Click OK button

Look at lots of threads of lots of Tiger's with Zim coating

As to what it is.. Google search for Zimmerit, top link was.... [link=http://www.panzerworld.net/zimmerit.html]THIS[/link]