Lutz my friend, there are only 2 people on this forum and you are the only 2 people that i have ever hear state that tyrons are not worth having, its time you stopped with your negativity on this subject. you and john both state that there is no like for like proof that these items actually work, well i saw the videos when tyrons first came out and if they are good enough for the police fire brigade ambulance service and armed forces in the uk then they are good enough for me.
your first post stated you did not want to start this debate again but you have posted twice now discounting the benefits that most others are happy to agree on.
on the thread subject, ive had no trouble getting my tyres repaired with the tyrons fitted, all "ats" centers are capable as are caravan dealer service centers, you should have received the removal long allen key when you had them fitted.