I think I got an idea of what you are looking for. In Germany there are some kind of "universal fender flares" made of rubber for the "TÜV"-examination (yep, the prejudice of us loving rules and examinations is absolutly right). They are self-stick and can therefore be installed and removed with ease (well at least once).
For example: 4x Kotflügelverbreiterung (2 Achsen) Universal selbstklebend Verbreiterung PKW | eBay
They are available in different sizes, the one in the link is pretty small with 3,5cm (about 1,5 inch). The producer for this one is called "Estilo.R", but I'm pretty sure that company doesn't produce but only labels them that way. Just search for "fender flares rubber" or something similiar, I'm pretty sure you will find common offers.