I am trying to put road-style tires on my wife's mountain bike. I bought a couple of Geax Streatrunner tires (26 x 1.6). Today I tried to install the first tire on the front rim, and just could not get the tire bead to sit correctly. That little line that you can use to make sure the tire is seated evenly all the way around was always dipping under the rim at a certain point.
When installing the tire, I placed the first bead around the rim, then inflated a new tube just enough to hold its shape, put the tube on the rim, and then pushed the second bead of the tire around the rim. I then inflated the tube to about 20 psi and bounced it on the floor, all the way around. I understand this step is what sets the tire bead on the rim correctly. I even tried pushing the tire back and forth on the rim while it was inflated between 20 and 30 psi, but nothing I did would set the tire right. Just to see, I installed the wheel/tire on the bike and spun it around, and it became really evident how lopsided the tire was mounted.
I then realized the new tires (Geax Streetrunners) had the words "Use only on hook beaded rims" imprinted on the side. I never noticed this before. Could this be why I am having this problem? Do I (actually, my wife) even have hook beaded rims? The bike is a pretty cheap 2007 Schwinn Frontier, and although I do have the specs on the bike, they don't state info on the rims. The specs state:
Wheelset: Rims: Alloy ATB; Hubs: Sealed mechanism Alloy w/ QR with thread-on rear
Tires: Schwinn Frontier ATB w/ smooth rolling, center tread, 26" x 1.95"
Below are some pics of the rim. Any help is appreciated. Thanks!