Originally Posted by
Chrome Molly
Going on ten days pretty soon...
The tire sits on top of the bead shoulder, not in between. Try inflating the tire very lightly after mounting, then pinch and work the tire around the rim to make sure the seating above the bead shoulder is very even before taking the pressure up. If you can't get it even, try a layer of tape on the rim (slightly wider than the normal rim tape you'd use, covering the bead shoulder, but not going up the sidewall). If your tire still blows off the rim at reasonably low psi, then you're back to tires, or possibly even the rim itself. Tire being the cheaper option to try to solve the original problem and preserve your man cred. Seriously though, if you're aiming to get over 90psi, you'll want a hooked rim. If you're OK with lower pressures, then a better tire will ride more nicerly on the rims you have. Good luck.
Ok well ten days equals...my tubes and rim tape just got here, plus family obligations and blah blah blah. Anyways I got the tire and tube on and inflated a little and went around the wheel making sure that the tube was in fact completely inside the tire then aired a little checked and repeated a few more times till is was aired to 75 psi. I really think what happened was I didn't go around the tire on both sides and check for a tube showing. So, I am new to this stuff...and I am trying to understand the mechanics and I just don't understand the beads of the tire sitting on top of some metal shoulders along the inside walls of a rim make a tire seat and not move or come off?