Just got back from 2 weeks in the Flinders. We bought our Cooper STT's just before O'Tooles and have been very happy with their performance both in the Vic High Country and they coped extremely well on the Sharp rocks in the Flinders. No luggs torn off and a few spots where the sharp rock has cut the base tyre, but no punctures. We've definately given these tyres a good workout and can't be happier. Pressures are important with these tyres though so don't be too impatient to stop and deflate.