I have been to Tirshing several times on my Kix 660 turbo. Extremely demanding climb is the one from the village up the hill that descends into Tirshing glacier and I made it without issue. Though I have never crossed the glacier but its easy if open as I have seen tractors crossing it.....no climb. It cant go far in the valley as there is a cluster of houses that block the way for a vehicle.
Last year Tirshing village was a ghost town owing to economic slow down......only my friends and German tourists. That lovely campsite on the hill was abandoned and the partners were in Astore for a living 
