I can't sat I've had issues with specific tires. Most take 5 to 15 minutes to remove and re-install. A little longer when they are new. But I did have a hell of a time installing tires on my previous rear rim on my mtb/winter bike (26" Axel - don't remember the exact model) . I've broken a few tire leavers trying to get tires on that one. Even the LBS couldn't get the studded tire on last winter. The front one with a unlabelled stock rim was a piece of cake to install a tire. It was the same LBS that had installed that rear rim a couple years earlier so they replaced it for next to nothing just to get the tire on.