This question is based on the fact that Conti supply tubed as well as tubeless TKC80s but but not for the standard GS size. I noticed on the French guys off road trip in Morocco that they were changing tubes after that had punctures and as we are planning a similar trip I was wondering if anyone had fitted a non standard tubed TKC to their GS, or is the solution as Steptoe says just to stick a tube in if you need to?