Take the 2-minute tour ×
Bicycles Stack Exchange is a question and answer site for people who build and repair bicycles, people who train cycling, or commute on bicycles. It's 100% free, no registration required.

I have a new problem on my bike which occured after patching my inner tube. Since I put the patch on, my tire is pushed out away from the rim near the intake valve (not near the patch). In the picture below, you can see the inner tube between the rim and the tire (partially hidden from view by snow). This is the case only on that spot, and only on that side. I can still ride the bike (I've been riding it like this for two days) but I can feel a small bump every time my wheel make a full rotation. Mostly, I'm afraid it will break soon.

The question: What's causing this problem and how can I solve it?

enter image description here

share|improve this question
5  
Do yourself a favor and don't ride it around until it is fixed. Seriously. –  WTHarper Mar 19 '13 at 23:31
1  
Respect for fixing your bike in the snow. –  James Bradbury Mar 20 '13 at 10:28

5 Answers 5

up vote 6 down vote accepted

The picture does not make the situation totally clear, but it appears that tube is not centered in the tire, and the tire is not centered over the rim. This tends to happen especially near the stem, because the thicker part of the tube gets caught between tire and rim and prevents the tire from sliding into place.

Deflate the tire, then press the valve stem in about 1/2 or 3/4 inch while you wiggle the tire to get it around and under tube. Inflate slowly, and if you see the same thing again, repeat the process. It may take two or three tries to get things lined up..

(If, on the other hand, what we're seeing is the sidewall failing and the tube pressing through the sidewall then the tire's toast.)

share|improve this answer
2  
I wouldn't even ever consider riding on the tire like this. Get a new tire ASAP... I doubt I would even ride to a bike shop to get a new one. –  Benzo Mar 19 '13 at 23:34
2  
@Shawn: it surely looks ripped. –  Mladen Jablanović Mar 19 '13 at 23:55
4  
A blowout is very likely, and can be disastrous at any sort of speed, or while negotiating traffic. –  Daniel R Hicks Mar 20 '13 at 0:57
1  
A blowout on icy roads at that. If it is your front wheel, the risk is far greater. Tires and tubes are cheap and expendable. –  WTHarper Mar 20 '13 at 1:20
1  
Thanks @DanielRHicks, your solution of re-inflating the tire with the stem pushed 1/2 an inch inside the tire worked. Sorry for the delay, I had to buy a new pump (the tube from the one I had ripped because of the cold) –  Shawn Mar 21 '13 at 13:30

I've thrown away tires that were no where near as frightful as this one looks. ANY attempt at salvaging the tire or tube is ill advised.

I'd also carefully inspect the wheel rim as well to see if there is any deformation, warping or splitting. Loss of a tire while moving is a potential visit to the emergency room or the morgue.

share|improve this answer

As I already wrote in the comment, the tire looks ripped to me (as Rider_X suggests, that the bead has torn away). It would be helpful if the camera's focus was on the tire instead on the house behind. :)

As you are in a city, you can buy a new tire and replace it. Easy. But these kind of things sometimes happen when you are on the road, away from bike shops and services. If you don't have spare tire in that case, you may perform an emergency repair so that the tire and tube can hold for some time:

http://voices.yahoo.com/bike-skills-repair-torn-open-tire-8524921.html

The idea is to place something (the article suggest denim, but I've heard people using pieces of old worn out tire, without the bead of course) between the ripped tire and the tube, and then wrap them both tightly, using a duct tape, rope, wire, whatever comes in handy. Riding will not be pleasant, but it's better than pushing your bike with a flat.

share|improve this answer
    
My thinking is that what looks like torn stuff is really just the "flash" along the bead. If you look farther down the rim you can see that most of the darker-colored band disappears behind the rim. But the picture is poor, so it's hard to tell with any certainty. –  Daniel R Hicks Mar 20 '13 at 11:00
    
@DanielRHicks Thanks for explaining that, nobody seems to believe me when I say the tire is not torn. As for the picture, it was taken with my cell phone and I didn't manage to get better quality. –  Shawn Mar 20 '13 at 16:29
    
@Shawn - But if repeated attempts at deflating the tire, pushing in the stem, and reseating the tire do not result in a proper fit then likely the bead has been damaged and the tire needs to be replaced. –  Daniel R Hicks Mar 20 '13 at 21:15

As pointed out in other answers, the true solution is to get a new tire but you can for a short time reinforce the worn section of the sidewall with a folded dollar bill.

Just fold the bill into thirds and place it between the tire and the tube. I am not sure why (or if) a dollar works better than other materials but this is what I was always told and this is what I have always used.

share|improve this answer
1  
This would work if the tire had a hole, which is not my case. –  Shawn Mar 20 '13 at 2:33
    
It seems to work even if the sidewall is not torn but just weakened. I think it just distributes the pressure over a larger area. It is not a long term solution but it will help while you ride your bike to the shop to get a new tire. –  KennyPeanuts Mar 20 '13 at 14:12

It really looks like the bead has torn away from the tire. You can verify by taking the tire off and looking for a metal wire (like a big loop) is exposed in the corresponding area. If it is bad you will even be able to insert your finger between the beed and tire.

If this is the case, it is not repairable and is dangerous to ride on. Without an intact bead, the tire will not properly adhere to the rim when inflated (consistent with your description).

As @Daniel R Hicks stated if you ride on this and it blows it can be disastrous (e.g., a blow out on a corner where the tire is under more pressure).

share|improve this answer
    
The bead is fine in my case, but thanks! –  Shawn Mar 20 '13 at 1:34

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.