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


Go Back   > >

General Cycling Discussion Have a cycling related question or comment that doesn't fit in one of the other specialty forums? Drop on in and post in here! When possible, please select the forum above that most fits your post!

User Tag List

Reply
 
Thread Tools Search this Thread
Old 12-26-05, 07:40 PM   #1
Dang
Senior Member
Thread Starter
 
Dang's Avatar
 
Join Date: Oct 2004
Location: North Highlands, Ca.
Bikes:
Posts: 326
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Question about new tires

When I asked him about the out of round appearence, the kid at Bob's said the $19.99 Specialized 700x28 Crossroads will be just fine once I pump them up on my rim. But after pumping a ton of air in them they both have annoying wobbles. One is so bad it barley rubs on the chain stay. The ride is okay but you would think a pair of $40.00 Specialized tire would be at least almost true. Will they get better as time goes on or should I just return them?
Dang is offline   Reply With Quote
Old 12-26-05, 08:05 PM   #2
michaelnel
Macaws Rock!
 
michaelnel's Avatar
 
Join Date: May 2005
Location: San Francisco, CA
Bikes: 2005 Soma Doublecross
Posts: 1,513
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Are they seated properly on the rim?

You can check this by looking for a molded raised line near the edge of the rim but on the tire. Rotate the wheel, and that line should stay equidistant from the edge of the rim.

If it doesn't, the tire isn't seated properly on the rim.
__________________
---

San Francisco, California
michaelnel is offline   Reply With Quote
Old 12-26-05, 09:49 PM   #3
Mr. Beanz
Banned.
 
Mr. Beanz's Avatar
 
Join Date: Dec 2005
Location: Upland Ca
Bikes: Lemond Chambery/Cannondale R-900/Trek 8000 MTB/Burley Duet tandem
Posts: 20,030
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
You sure your rims aren't out of true? I've seen some tires that wobble, but not enough to touch the chainstay.

Check the runout of the rim brake surface, compared to the brake pads.
Mr. Beanz is offline   Reply With Quote
Old 12-26-05, 11:38 PM   #4
Wil Davis
Curmudgeon
 
Wil Davis's Avatar
 
Join Date: Aug 2005
Location: Nausea, New Hamster
Bikes: (see http://wildavis.smugmug.com/Bikes) Bianchi Veloce (2005), Nishiki Cascade (1992), Schwinn Super Sport (1983)
Posts: 1,572
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Sounds like they're not seated on the rims. I have the same problem with the rear-wheel of one of my bikes. It's caused by there being a rough spot on the inside of the rim, which the bead of the tyre has a problem moving up on to - the only way I've been able to cure this is to use a Q-tip to smear some liquid detergent (neat washing-up liquid) on to the bead at the point where it needs some help, and inflate to 125 psi. Works every time!

Hope this helps!

- Wil
Wil Davis is offline   Reply With Quote
Old 12-27-05, 08:13 AM   #5
Bekologist
totally louche
 
Bekologist's Avatar
 
Join Date: Oct 2004
Location: A land that time forgot
Bikes: the ever shifting stable loaded with comfortable road bikes and city and winter bikes
Posts: 18,025
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I've seen thwacked tires that may have been shipped and stored so they develop an out of round, out of true memory in the plies and wire bead.

Go show "BOB", tell him to make it right because you bought these tires from him and they appear to have been warped prior to your purchasing. Maybe its just a beadseat issue, usually it is.
Bekologist is offline   Reply With Quote
Old 12-27-05, 08:45 AM   #6
Wil Davis
Curmudgeon
 
Wil Davis's Avatar
 
Join Date: Aug 2005
Location: Nausea, New Hamster
Bikes: (see http://wildavis.smugmug.com/Bikes) Bianchi Veloce (2005), Nishiki Cascade (1992), Schwinn Super Sport (1983)
Posts: 1,572
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Bekologist
I've seen thwacked tires that may have been shipped and stored so they develop an out of round, out of true memory in the plies and wire bead.

Go show "BOB", tell him to make it right because you bought these tires from him and they appear to have been warped prior to your purchasing. Maybe its just a beadseat issue, usually it is.
I had a similar experience with my LBS. I'd bought a tyre which had been stored/shipped folded in such a way that there was a kink in the bead. I was absolutely sure there was a problem with the tyre, and so took it back to my LBS who were adamant that it was just a rough spot on the inside of the rim and after demonstrating that the tyre was OK, they eventually got it to seat correctly on the rim. I've had that tyre on and off that rim a number of times since, and it always requires the soap treatment.

- Wil
Wil Davis is offline   Reply With Quote
Old 12-27-05, 08:52 AM   #7
Retro Grouch 
Senior Member
 
Retro Grouch's Avatar
 
Join Date: Feb 2004
Location: St Peters, Missouri
Bikes: Rans Rockst (Retro rocket) Rans Enduro Sport (Retro racket) Catrike 559, Merin Bear Valley (beater bike).
Posts: 26,614
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 89 Post(s)
Sometimes the valve stem base will make a tire out-of-round. If the high spot looks like it's opposite the valve stem, deflate the tire to about 15psi, push the valve stem inward toward the hub, and reinflate the tire.
Retro Grouch is offline   Reply With Quote
Old 12-27-05, 07:31 PM   #8
Dang
Senior Member
Thread Starter
 
Dang's Avatar
 
Join Date: Oct 2004
Location: North Highlands, Ca.
Bikes:
Posts: 326
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Well after taking into consideration everything you guys said, combinding that with my infinite wisdom & re-inspecting the tire(s)...I decided that the tire's bead was messed up from shipping and so I returned them to Bob's. I then threw down an additional 20 bucks and picked up another set that seem a lot more true then the last set. I can't belive I blew a 60 dollar gift certificate on two bike tires for a old hybrid I paid only 320 bucks for back in '97.
Thanks guys and Happy New Year!
Dang is offline   Reply With Quote
Old 12-27-05, 09:42 PM   #9
DCCommuter
52-week commuter
 
DCCommuter's Avatar
 
Join Date: Mar 2005
Location: Washington, DC
Bikes: Redline Conquest, Cannonday, Specialized, RANS
Posts: 1,929
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Dang
I can't belive I blew a 60 dollar gift certificate on two bike tires for a old hybrid I paid only 320 bucks for back in '97.
That's what we're here for! Advice may be free, but it's not cheap!
DCCommuter is offline   Reply With Quote
Old 12-28-05, 07:08 AM   #10
eubi
No Rocket Surgeon
 
eubi's Avatar
 
Join Date: Jan 2005
Location: Corona and S. El Monte, CA
Bikes: Cannondale D600, Dahon Speed T7
Posts: 1,648
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Well, I was going to suggest you be sure the tube wasn't twisted, but you already got to the root of the problem.

Hey! Why not draw a cartoon about it?
eubi is offline   Reply With Quote
Old 12-28-05, 05:47 PM   #11
Dang
Senior Member
Thread Starter
 
Dang's Avatar
 
Join Date: Oct 2004
Location: North Highlands, Ca.
Bikes:
Posts: 326
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by eubi
Well, I was going to suggest you be sure the tube wasn't twisted, but you already got to the root of the problem.

Hey! Why not draw a cartoon about it?
Oh you saw my cartoon did you? You know I didn't even check for replieson that post till just now. Halairious. ( did I spell that right?)
You can see some more cartoons at:
http://photobucket.com/albums/c333/JackandTimmy/
Dang 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 04:24 AM.