Posts
898
Joined
8/29/2010
Location
Grand Junction, CO
US
Edited Date/Time
6/19/2018 8:49am
Riddle me this one Vital Audience...
In the last 24 hours I've had two bead failures. Out of 20 years of riding/racing bikes, I've never seen a bead fail to the point where it is "stretched" and the tire unusable. Now I have two examples in a short amount of time.
Both times the bike was sitting when it occurred. Tire blows off rim. The bead failure is seen in the form of a wrinkle, when you go to put the tire back on the rim, it seems as if you are trying to put a 29" tire on a 27.5" wheel. The bead that blew off becomes ~1" bigger.
Both tires Maxxis. The first one, a DHR II, had been used a bit on a previous wheelset with 0 failures. The other, An Aggressor, was almost new.
Tire pressure low 30s
Wheels are Bontrager aluminum OEM Slash wheels.
Anyone have any thoughts? Wheel? Bad luck? Voodoo magic spell put on me by an ex girlfriend (likely)?
In the last 24 hours I've had two bead failures. Out of 20 years of riding/racing bikes, I've never seen a bead fail to the point where it is "stretched" and the tire unusable. Now I have two examples in a short amount of time.
Both times the bike was sitting when it occurred. Tire blows off rim. The bead failure is seen in the form of a wrinkle, when you go to put the tire back on the rim, it seems as if you are trying to put a 29" tire on a 27.5" wheel. The bead that blew off becomes ~1" bigger.
Both tires Maxxis. The first one, a DHR II, had been used a bit on a previous wheelset with 0 failures. The other, An Aggressor, was almost new.
Tire pressure low 30s
Wheels are Bontrager aluminum OEM Slash wheels.
Anyone have any thoughts? Wheel? Bad luck? Voodoo magic spell put on me by an ex girlfriend (likely)?
On a serious note, that is the first time I hear about this kind of failure! :0
Do you have any pictures? If it was only one failure I would go for a defect in the rim structure... But here 2 times seems really strange...
Did you often ride on the rims?? (Following a flat or whatever)
I have read about this happening with a couple of maxxis tyres shipped with Commencals recently, probably just a bad batch of tyres...
Its bizarre.
I didn't notice anything crazy during mounting but I was going fast and used my old Intense DH tire lever...(more like a moto lever)
Maybe that did it?
Been hearing some chatter and there seems to be some smoke but maybe some journalists could do some digging.
Clearly a touchy topic on several levels...
Post a reply to: The Mystery of the Bead Monster