Hello all -- long-time lurker, first-time poster.
Curious to hear some pro opinions on this. The short version is I had two new Schwalbe Nobby Nics blow off the front rim during install -- rim appears OK and I installed several old tires successfully afterward. Rim, tire or user issue? Or just bad luck? Long version is below:
I have stock Bontrager Line Comp 30s (29s) with the OEM rim strips. I installed a NN on the rear without issue (mounted dry using a floor pump).
The front was a little bit more stubborn - I used a light amount of soapy water and eventually got the bead to set (probably around 45 psi), but as I was reaching down to remove the nozzle the tire exploded about 15 inches from my face (my ears are still ringing).
I re-mounted the tire and (very carefully) inflated but the bead was clearly deformed. I checked the rim/rim strip all the way around and everything seemed to be fine, especially at the spot where the bead rolled over. I installed the stock XR4 and rode it for a week while waiting on a new NN.
When installing the new tire yesterday, the same thing happened. This time I pumped in a more controlled fashion and never exceeded 40 psi. I watched the last 9-10" of bead slide into the rim edge, but then BOOM blowout #2. Another ruined tire.
I installed Barzos that were on there previously (tried both front and rear tires, no problems), and just re-mounted the XR4 again without issue.
Possible rim or rim strip issue? Bontrager-Schwalbe compatibility issue? Just bad luck? Just looking for some input before I blow more $ and ruin another new tire.
Curious to hear some pro opinions on this. The short version is I had two new Schwalbe Nobby Nics blow off the front rim during install -- rim appears OK and I installed several old tires successfully afterward. Rim, tire or user issue? Or just bad luck? Long version is below:
I have stock Bontrager Line Comp 30s (29s) with the OEM rim strips. I installed a NN on the rear without issue (mounted dry using a floor pump).
The front was a little bit more stubborn - I used a light amount of soapy water and eventually got the bead to set (probably around 45 psi), but as I was reaching down to remove the nozzle the tire exploded about 15 inches from my face (my ears are still ringing).
I re-mounted the tire and (very carefully) inflated but the bead was clearly deformed. I checked the rim/rim strip all the way around and everything seemed to be fine, especially at the spot where the bead rolled over. I installed the stock XR4 and rode it for a week while waiting on a new NN.
When installing the new tire yesterday, the same thing happened. This time I pumped in a more controlled fashion and never exceeded 40 psi. I watched the last 9-10" of bead slide into the rim edge, but then BOOM blowout #2. Another ruined tire.
I installed Barzos that were on there previously (tried both front and rear tires, no problems), and just re-mounted the XR4 again without issue.
Possible rim or rim strip issue? Bontrager-Schwalbe compatibility issue? Just bad luck? Just looking for some input before I blow more $ and ruin another new tire.