Originally Posted by
philbob57
It's not always Conti. I watched the head mechanic at my LBS spend 20 minutes mounting my Vittoria Randonneur on CR-18s. Alas, the stem was angled, so he had to take the tire off the rim and spend another 20 minutes getting it back on with the stem straight.
IT can also vary by tire size using the same brand/model of tire. I've never been able to mount Vittoria Randonneur 28's on one of my bike's rims, but the 35's go on nice and easy.