Hello Today I placed the order for a Truma UltraHeat at Obelink as I want to do some more serious vintercamping next winter with our Troll 540. I will investigate how to mount "Winterwände" as decribed here: https://www.eriba-touring-club.de/tips/ ... ip_22.html Any suggestion how thick material to use, would 4mm be good or is it too thin? I will also expand the Truma Luftrohre leter when I know how to fixate the walls. Up to now we have only used our Troll down to -5 degrees. I have also to find better tyres, any suggestion for all-season tyres? Any good tips? (I fully understand German, but is to lazy to write if there are any opinion)