I've raced the last three 12hrs on Corsa Speeds and haven't had an issue (other than being fucking bumpy - UK roads are shit). I used to choose more durable tyres when racing 24hrs but for events now I'm going to run the fastest shit I can afford.
It's a TT - your race is over if you flat and your race is pointless if you don't go as fast as possible.
You've got lucky on those tyres. A guy flew from Oz to do worlds last year and punctured a km in on them. Going as fast as possible at all costs worked out well.
I've raced the last three 12hrs on Corsa Speeds and haven't had an issue (other than being fucking bumpy - UK roads are shit). I used to choose more durable tyres when racing 24hrs but for events now I'm going to run the fastest shit I can afford.
It's a TT - your race is over if you flat and your race is pointless if you don't go as fast as possible.