Had my first flat in my new Conti 4000's this week :
I have about 500 km on them so there only a couple of weeks old. No problem. I Swapped over tubes, and off I went again, but I did notice how loose the tyres were on the rims. ( I easily refitted the tyre without the need for leavers ), but only minutes later the tyre blew off the rim.
Changed a 2nd tube, this time making absolutely sure that the beed was well and truly hooked, but only to get the same result about half an hour later.
Who else has had this sort of issue with keeping tyres on rims, and what have you done to resolve it ?
Note. Im using Conti 4000 tyres 700 x 23mm, Zipp 303 rims, & Vittoria Ultralite tubes 700 x 19/23mm
I was taught how to refit tyres without using levers more than 40 years ago by one of my fellow apprentices, who, before transferring as an apprentice Electrical Fitter & Mechanic in the PMG, had been a postie/telegram messenger in Kimba, where he definitely did not have the services of a LBS.
Currently use GP4000s on my Zipp wheels and have done for years never had a problem do not even carry levers and never use them BUT check your rim tape that it did not move and cut your tube as plastic ones sometimes do