It’s definitely why I stay away from these sorts of things, I’ll stick to my blistered thumbs thanks
c4ndyman31 on
Please post the wheel info
terdward on
What wheels? Also, this is a good reminder that carbon is usually designed and manufactured with specific stress tolerances IN SPECIFIC DIRECTIONS. This is an example of what happens when force is applied in a direction outside the design parameters.
Ok-Consequence2859 on
sorry this happened. This is not the fault of the lever though. it is from improper use. Never use the bead holder on a carbon rim. I hate bead holders on any rim, they take up room in the wheels and actually make it harder to put the tire on. You can install most tire 100% by hand with proper technique and the ones you cant one good lever used correctly for the last 10%. The number one thing i see people make mistakes with on tire mounting, well two.
1- they do not keep tension on the tire pulling it down into rim and making sure the bead of the tire thats on the rim already is not sitting on bead shelf. make sure that at all times the tire bead of the part of the tire already on the rim is pushed in to the center of rim, if its getting tight look back over it.
2-, when it come to tire lever use, people make way to large bites in the bead. One check point number 1, and if you have to use a lever with one hand holding the bead slip the lever in with other hand close to where the bead is already in rim. make vary small bite moving lever only the width of the lever head each time, and double checking the bead is not lifting to the bead shelf.
Source someone who has installed 10,000 plus tires(not an exaggeration been at this a long long time).
ernkeebler on
I use those levers daily, though I rarely use the back end like that to mount tires, even tight-fitting ones. Even with a mounting aid (like the back end of that lever or the CushCore BeadBro), it’s still important to guide the tire bead into the tire channel all around the rim and finish the tire mounting at the valve stem so that you have more “slack” as you finish mounting the tire. That said, I can’t fathom how using that lever would have caused the rim failure without an existing flaw or damage to the rim in that location.
ShallotHead7841 on
I’m trying to work out what you were doing when this happened? Assuming it was installing a tyre?
WrenchHeadFox on
User error
jmdunkle on
Plastic wheels, predictable result
IamaFunGuy on
Yes couldn’t possibly be the brittle carbon rim as an issue
Temporary_Oil_4970 on
Lesson learned, if you’re the original owner this should qualify for “crash” replacement
Own-Hawk8548 on
That’s crazy … I have one of those for stubborn tires. That said I found a new technique from this video that has let me get my last tires on with my hands only … but I do wear gloves to avoid blisters
17 Comments
[deleted]
What wheels are these….omg
This is why I never use levers on carbon rims.
God, that’s some nightmare fuel.
It’s definitely why I stay away from these sorts of things, I’ll stick to my blistered thumbs thanks
Please post the wheel info
What wheels? Also, this is a good reminder that carbon is usually designed and manufactured with specific stress tolerances IN SPECIFIC DIRECTIONS. This is an example of what happens when force is applied in a direction outside the design parameters.
sorry this happened. This is not the fault of the lever though. it is from improper use. Never use the bead holder on a carbon rim. I hate bead holders on any rim, they take up room in the wheels and actually make it harder to put the tire on. You can install most tire 100% by hand with proper technique and the ones you cant one good lever used correctly for the last 10%. The number one thing i see people make mistakes with on tire mounting, well two.
1- they do not keep tension on the tire pulling it down into rim and making sure the bead of the tire thats on the rim already is not sitting on bead shelf. make sure that at all times the tire bead of the part of the tire already on the rim is pushed in to the center of rim, if its getting tight look back over it.
2-, when it come to tire lever use, people make way to large bites in the bead. One check point number 1, and if you have to use a lever with one hand holding the bead slip the lever in with other hand close to where the bead is already in rim. make vary small bite moving lever only the width of the lever head each time, and double checking the bead is not lifting to the bead shelf.
Source someone who has installed 10,000 plus tires(not an exaggeration been at this a long long time).
I use those levers daily, though I rarely use the back end like that to mount tires, even tight-fitting ones. Even with a mounting aid (like the back end of that lever or the CushCore BeadBro), it’s still important to guide the tire bead into the tire channel all around the rim and finish the tire mounting at the valve stem so that you have more “slack” as you finish mounting the tire. That said, I can’t fathom how using that lever would have caused the rim failure without an existing flaw or damage to the rim in that location.
I’m trying to work out what you were doing when this happened? Assuming it was installing a tyre?
User error
Plastic wheels, predictable result
Yes couldn’t possibly be the brittle carbon rim as an issue
Lesson learned, if you’re the original owner this should qualify for “crash” replacement
That’s crazy … I have one of those for stubborn tires. That said I found a new technique from this video that has let me get my last tires on with my hands only … but I do wear gloves to avoid blisters
https://youtu.be/Au7N0tH7fxk?si=xYrszjbGzd82QXJc
Kool stop tire bead jack wouldn’t have this issue
I used to have the tire jack thing that you pull…. But continental tubeless and shimano rims did them in.
Pedro’s. Been using the same pair for the last decade.