Opinions please.... I'm thinking of getting a set of these as my tyres (on the front) are shot; mind you its not due to having any tread as there is still 6 to 7mm, its due to the inside walls crumbling!!! Not happy or impressed. Apparently trying to get them replaced under warranty is impossible!! So i am looking at options:- 1. Thinking of going with the F1 Assyms 2. Looking at run flat (thought the idea of safety with having these especially when doing some brisk driving ) Not sure if this or similar has been done... sorry if it has, did a quick search but couldn't find anything.