Tire is twisting. What could be the cause of this?
08-04-11 | 09:11 AM
#1
Thread Starter
Senior Member
Joined: Aug 2006
Posts: 1,419
Likes: 10
Tire is twisting. What could be the cause of this?
I just noticed that my rear tire is twisting. I have had the same thing happen before. This particualr tire has about 1.2k miles on it. Any idea what might be causing this and how I can correct the problem?
08-04-11 | 09:51 AM
#2
Reeks of aged cotton duck
Joined: Oct 2007
Posts: 1,176
Likes: 7
From: Middle Georgia, USA
Bikes: 2008 Kogswell PR mkII, 1976 Raleigh Professional, 1996 Serotta Atlanta, 1984 Trek 520, 1979 Raleigh Comp GS
Looks like a casing failure to me. I quit using Maxxis road tires because I had several instances of this in brand new tires. The mounted tires looked fine until you pumped them up to riding pressures... then the casings would deform just like you're seeing.
I'd replace that tire.
I'd replace that tire.
08-04-11 | 09:52 AM
#3
Senior Member
Joined: Jul 2005
Posts: 4,990
Likes: 709
From: Boulder County, CO
Bikes: '80 Masi Gran Criterium, '12 Trek Madone, early '60s Frejus track
08-04-11 | 11:09 AM
#4
Senior Member
Joined: Mar 2008
Posts: 5,559
Likes: 53
From: The 'Wack, BC, Canada
Bikes: Norco (2), Miyata, Canondale, Soma, Redline
Really? While I agree that the casing is damaged and the tire needs instant replacing I sure would not tolerate my tires going bad like this after only 1200 miles. But then I don't buy the super lightweight racing tires for my bikes. Is this sort of early failure, and only 1200 miles IS an early failure in anyone's books, a common thing for the super thin and super light racing tires? I would certainly hope not. I'd say that ditching that brand to go to one with a better reputation for no such failures would be the right thing to do.
08-04-11 | 11:53 AM
#6
Super Moderator
Joined: Jul 2004
Posts: 21,987
Likes: 1,169
From: Ffld Cnty Connecticut
Bikes: Old Steelies I made, Old Cannondales
In 30 years, I don't think that's ever happened to me (at least never that severely), and I ride my tires down to the cords.
__________________
Bikes: Old steel race bikes, old Cannondale race bikes, less old Cannondale race bike, crappy old mtn bike.
FYI: https://www.bikeforums.net/forum-sugg...ad-please.html
Bikes: Old steel race bikes, old Cannondale race bikes, less old Cannondale race bike, crappy old mtn bike.
FYI: https://www.bikeforums.net/forum-sugg...ad-please.html
Last edited by Homebrew01; 08-04-11 at 12:09 PM.
08-04-11 | 12:00 PM
#7
Galveston County Texas
Joined: Nov 2007
Posts: 33,335
Likes: 1,286
From: In The Wind
Bikes: 02 GTO, 2011 Magnum
08-04-11 | 12:11 PM
#8
Thread Starter
Senior Member
Joined: Aug 2006
Posts: 1,419
Likes: 10
08-04-11 | 12:25 PM
#10
You gonna eat that?
Joined: Sep 2008
Posts: 14,917
Likes: 543
From: Fort Worth, Texas Church of Hopeful Uncertainty
Bikes: 1966 Raleigh DL-1 Tourist, 1973 Schwinn Varsity, 1983 Raleigh Marathon, 1994 Nishiki Sport XRS
That's not a casing failure, it's a belt failure. She's gonna blow!
__________________
I stop for people / whose right of way I honor / but not for no one.
Originally Posted by bragi 
"However, it's never a good idea to overgeneralize."
I stop for people / whose right of way I honor / but not for no one.
Originally Posted by bragi "However, it's never a good idea to overgeneralize."
08-04-11 | 03:03 PM
#12
Galveston County Texas
Joined: Nov 2007
Posts: 33,335
Likes: 1,286
From: In The Wind
Bikes: 02 GTO, 2011 Magnum
I bought 12 Serfas tires on sale for $10.00
One tire did that when it was pumped to 120 psi and got a cut in the contact area.
They are rated at 130 psi.
So now I only go up to 110 front and 110 rear.
Have 4000 miles on two of them with no problems.
One tire did that when it was pumped to 120 psi and got a cut in the contact area.
They are rated at 130 psi.
So now I only go up to 110 front and 110 rear.
Have 4000 miles on two of them with no problems.
__________________
Fred "The Real Fred"
Fred "The Real Fred"
08-04-11 | 11:35 PM
#14
Senior Member
Joined: Apr 2009
Posts: 39,897
Likes: 3,865
From: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
It's a tire quality, and not necessarily a pressure issue. A decent tire should have a reasonable (more than 30% minimum) safety margin for inflation pressure. Inflating a 110psi rated tire to 120psi should not damage the tire. Also, the usual mode of failure is for the tire to blow off the rim, not for a ply to fail causing this kind of twisting.
It is possible that the tire's structure is getting damaged by impact with road hazards while at ultra high pressure.
1.2k miles is very short for tire life, but at $10.00 per 1.2k for a nice light tire, this might actually be a better bargain on a per mile basis.
It is possible that the tire's structure is getting damaged by impact with road hazards while at ultra high pressure.
1.2k miles is very short for tire life, but at $10.00 per 1.2k for a nice light tire, this might actually be a better bargain on a per mile basis.
__________________
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
Thread
Thread Starter
Forum
Replies
Last Post
southpawboston
Bicycle Mechanics
11
07-12-12 09:39 PM
