Harvy,
[quote]The high TOW may have caused the tires to burst<hr></blockquote>
No - it didn't. The metal fragment did.
[quote]but they have done so before several times on concorde and the fact that this didn't cause a fire before is amazing.<hr></blockquote>
No, it isn't. Damaged tyres have never punctured a Concorde wing in the history of the aircraft. Unlike some other types. The Gonesse accident was a combination of many incredibly improbable circumstances, and the chances of even that almost impossible chain of events recurring has been eliminated.