I've been meaning to collate a post on Pirelli ads from the 50's & 60's for a while, I find this era the most graphically inspiring from the brand.
"In the 1950s and 1960s, as the Pirelli group became international, Pirelli chose great European designers, such as Max Huber, Pavel M. Engelmann, Bob Noorda, Albe Steiner e Raymond Savignac. While Italian designers included Bruno Munari, Armando Testa, Riccardo Manzi, Giulio Confalonieri and Pino Tovaglia."
Here's some favourites, with reference to the source below...
http://www.pirelli.com/web/group/brand/advertising/default.page
http://www.thisisdisplay.org/tag/Pirelli
http://www.thisisdisplay.org/features/Bob_Noorda_1927-2010/
http://80magazine.wordpress.com/category/pirelli/