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8 Replies Last post: Aug 2, 2007 8:34 AM by ForceD  
Click to view bcc594's profile Pro 156 posts since
Dec 14, 2007
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Jul 31, 2007 10:59 AM

Do I need a new tire?

Hi all,
Yet another newbie question. I got my first puncture on my first road bike the other day. I fixed the flat, no problem, but I'm wondering whether one needs to replace a tire because of a puncture. I was able to dig the piece of glass out of the tire, but it left a goodly sized gash. Should I think about making the trip to the LBS for a new tire? Any suggestions?

Thanks.

Bradley
Click to view broadbill's profile Pro 156 posts since
Sep 27, 2004
1. Jul 31, 2007 11:16 AM in response to: bcc594
Re: Do I need a new tire?
yes.


The problem is that the gash is a weak point in the tire where the relatively fragile tube underneath could be damaged leading to another flat. You could keep getting flat after flat simply by debris working into that gash and popping your tube.

Since it's a weak spot in the tire, it is also possible that when inflating the tube, the tube might bulge out of that weak spot and pop....which is very loud and startling to say the least. Not having your ears ring for 2 hours might be worth the price of a tire in of itself.

To fix a tire that has a gash in it while on a ride so that it gets you home. When changing the tube, put something thin, tough, and flat between the gash in the tire and the tube, then inflate the tube. Good things to use are empty gel/Gu packages, a folded up dollar bill, flexible piece of plastic, etc., This will serve as a cover over the gash to protect the tube underneath.
Click to view 4boysmom's profile Legend 1,307 posts since
Dec 10, 2007
2. Jul 31, 2007 12:28 PM in response to: bcc594
Re: Do I need a new tire?
Depends on how big 'goodly sized' is... I've picked glass, tacks, etc out of a tire and continued riding on it until the tire was worn out. However, if it is a true gaping gash, yah, replace it...
Click to view Chris the Wheeler019's profile Legend 262 posts since
Nov 1, 2006
3. Aug 1, 2007 7:44 AM in response to: bcc594
Re: Do I need a new tire?
Depending on how big the gash is.

[b]"From the pages of a cheap ba$tard."[/b]

I ran over a peice of metal on my racing chair once, about 2 years ago. I tore a "gash" about 3/4 inch long. I limped home on the flat. I replaced the tube.. To block the gash I stuffed a 1 dollar bill between the tube and the tire. It's still there today.

If you have a sponsor paying for your tires, go for it. But if your the average recreational racer and not making a living from it, try the dollar bill and ride on it. If it fails, then the gash is bigger than is sounds. Then go buy a tire.

quote:<HR>Originally posted by broadbill:
[b]To fix a tire that has a gash in it while on a ride so that it gets you home. When changing the tube, put something thin, tough, and flat between the gash in the tire and the tube, then inflate the tube. Good things to use are empty gel/Gu packages, a folded up dollar bill, flexible piece of plastic, etc., This will serve as a cover over the gash to protect the tube underneath. [/b]<HR>
Click to view jroden's profile Legend 1,683 posts since
Dec 11, 2007
4. Dec 25, 2007 4:07 PM in response to: bcc594
Re: Do I need a new tire?
Usually if you can stick a fingernail in there or see the cords through the cut, the tire is shot. Fixing it with a "boot" (dollar bill or somesuch) will work but the tire usually develops a bit of a hop. I get them by the dozen every year and just keep a box of tires and tubes in the garage, it's an expensive sport. Cheaper tires tend to cut easir because of the low thread count.

When I do rides with people in the winter, the ones who keep us waiting with flats out in the cold often seem to be the cheapskates who use worn out tires or buy "good deal" closeouts from Nashbar with soft tread compounds. I get time to reflect on this with the cold rain running down my back on the side of some road in the middle of nowhere...

I've had good luck with the Specialized Mondo tires and the ones that say "Pro" something or other on the side, they seem to wear nicely and ride just fine.

http://This message has been edited by jroden (edited Aug-01-2007).
Click to view dave.macluskie's profile Legend 299 posts since
Nov 1, 2007
5. Aug 1, 2007 8:24 PM in response to: bcc594
Re: Do I need a new tire?
Mostly on topic... I don't suppose anyone has a good bike newbie list of a half dozen quality tires, tubes and wheels?

They all look/sound the same to me. I know I'm running 700x23 (that's what it says on the tire!) and assume I put in 700x18 tubes. The wheels are whatever came with my bike (Trek 1500) and I'm sure they're ridable but not great.
Click to view tri_coach06's profile Legend 662 posts since
Aug 14, 2007
6. Aug 1, 2007 8:51 PM in response to: bcc594
Re: Do I need a new tire?
Post a pic and lets see the tire.

If the cut is mostly on the outside and just a nick or puncture you can still ride on the tire. Where I ride you can count on jerks dropping bottles and what not on the road all the time. I have a ton of cuts on my tires. If the cut on the inside of the tire is small you can place a tube patch on the inside of the tire.

I don't have to buy my tires and don't replace them for a small cut.

I agree with BB, if the cut is big enough for the tube to pop out under pressure, it's a goner.

Sheldon
Click to view adam6's profile Legend 205 posts since
Nov 21, 2007
7. Aug 2, 2007 12:36 AM in response to: bcc594
Re: Do I need a new tire?
If you are looking for good training tires, I like the continental Ultra Gatorskins, they are super tough, back when I was really really poor, I put over 4,000 miles on a pair, by the end, I got a wicked shimmy on descents, but I went 4,000 miles without buying new rubber.

FWIW, the maxxis re-treads are supposed to be tough, they are ****, I wore a pair out completely within about 900 miles.
Click to view ForceD's profile Legend 523 posts since
Dec 14, 2007
8. Aug 2, 2007 8:34 AM in response to: bcc594
Re: Do I need a new tire?
I?ve saved cut tires and continued to use them for hundreds of miles this way:
Cut a smooth piece of plastic from an empty soda bottle. Try to cut it so that the curve of the plastic will match the curve of the tire where the gash is and so that it?ll be somewhat longer/wider than the gash. Put a little bit of rubber cement on the piece of plastic and place it over the gash on the INSIDE of the tire. Don?t mount it until the rubber cement is dry (or any smear might stick to the tube). Once it?s mounted and inflated, I fill the outside of the gash with a drop of shoe goo and smooth it off so there?s no bump. Soda bottles are rated for somewhere in the neighborhood of 150psi, so nothing should blister out of the gash.

Dan