Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 04-29-03, 10:24 AM   #1
ZackJones
On Your Right
Thread Starter
 
ZackJones's Avatar
 
Join Date: Mar 2003
Location: Warner Robins, GA
Bikes:
Posts: 1,422
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Bulge in Tire

Greetings,

I noticed last night while I was installing a new computer on my bike ('03 K2 Mach 2.0) that the rear tire Vittoria Zaffiro has a bulge in the side of the tire. I looked at it closely and the tire is properly seated in the rim.

Should I be concerned? Would this bulge indicate a weak spot in the tire? FWIW I have almost 800 miles on the tires. This afternoon Donna and I will be riding a route that is near my LBS so I'm going to take the bike into them to have a look.

Thanks in advance for any feedback.

Zack
__________________
"You never fail, you simply produce results. Learn from these" - Anonymous
ZackJones is offline   Reply With Quote
Old 04-29-03, 10:27 AM   #2
shaharidan
Senior Member
 
shaharidan's Avatar
 
Join Date: Mar 2003
Location: rio rico, az
Bikes:
Posts: 589
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
i'm not as sure about bicycles, but if it was a car i'd get a new tire. they do get weak spots sometimes.
__________________
No matter how fast I'm going, I'm in no hurry.
there are no bicycles in the valley, the only bicycle you find in the valley is the bicycle you ride down there.
Ride in the front, this space is available to anyone that wishes to take it-jjmolyet
shaharidan is offline   Reply With Quote
Old 04-29-03, 11:06 AM   #3
Ed Holland
8speed DinoSORAs
 
Ed Holland's Avatar
 
Join Date: Jul 2002
Location: Oxford, UK or Mountain View, Ca
Bikes:
Posts: 2,749
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Zack,

I Second Shaharidan's view. Though you dont say how serious the bulge is, it is often due to failure of some threads in the fabric casing of the tire. This is a serious weak spot. I ignored a bulge once - only for the sidewall to blow out. It made a hell of a bang, and it is a very good thing that it was the rear tire and not the front....


Just as an aside, do you use a pressure gauge when inflating tyres? I would recommend it (apologies if you do already). It is hard work to over inflate, but just as bad to run under pressure - there is an increased risk of pinch punctures and sidewall damage.

I'm sure the lbs will be happy to help,

Good luck ,

Ed
__________________
Get a bicycle. You will certainly not regret it, if you live.
Ed Holland is offline   Reply With Quote
Old 04-29-03, 11:19 AM   #4
TandemGeek
hors category
 
TandemGeek's Avatar
 
Join Date: Jan 2002
Bikes:
Posts: 7,208
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Several things will cause a rear tire to bulge:

1. A defect in manufacture
2. Hitting an obstruction that damages the casing
3. A cut or small puncture
4. A damaged rim bead, i.e., a fold in a kevlar bead or the cottom bead tape pulling loose

It happens and it's frustrating given the cost of the high performance tires that so many of us use. You can usually find any damage if you inspect both the tread compound, bead and inside casing. Nailing a rut usually scuffs or bruises one or both of the sidewalls.

If you find you have a bulge in a tire while you're out riding and are concerned about riding on it you can usually put a reinforcing boot (folded dollar bill, a GU or PowerBar wrapper or strip of cardboard) under the bulge to reduce the amount of the bulge until you get back to your starting point and/or until you can get a new tire.

If you find one in a new or relatively new tire right after putting it on take it back and ask for a replacement. If the shop says "sorry, it's used" contact the US importer and ask if they'll replace it (most will in the name of customer service and good PR).

Last edited by livngood; 04-29-03 at 11:24 AM.
TandemGeek is offline   Reply With Quote
Old 04-29-03, 12:04 PM   #5
Rev.Chuck
The Red Lantern
 
Rev.Chuck's Avatar
 
Join Date: Apr 2003
Location: Raleigh NC
Bikes:
Posts: 5,966
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
As livngood says. Check it and if the bulge is not from ride damage take it back to your shop, if it is fairly new, and they should replace it. If they say no then try BikeMine 800-223-3207
__________________
Are you a registered member? Why not? click here to register. Its free, and only takes 27 seconds!
Help out the forums, abide by our community guidelines.

I am in the woods and I have gone crazy.
Rev.Chuck is offline   Reply With Quote
Old 04-29-03, 05:44 PM   #6
ZackJones
On Your Right
Thread Starter
 
ZackJones's Avatar
 
Join Date: Mar 2003
Location: Warner Robins, GA
Bikes:
Posts: 1,422
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Just a quick follow up. LBS guys said it was busted threads on the side of the tire. They didn't have the same tire in stock but put another one on so I could ride tonight. I'm giong back tomorrow to get the tire swapped.

Thanks to all who replied.

Zack
__________________
"You never fail, you simply produce results. Learn from these" - Anonymous
ZackJones is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 10:18 PM.