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OT: Bikers (bicyclers), teach me about tire sizes, please
Posted by: clay
Date: January 17, 2007 08:19PM
My 6 year-old Trek hybrid (road/mountain) bike needs some new tires. The rear tire is starting to go bald, and I figure I might as well replace both while I'm at it and am getting the supplies to do so.

Problem is, I don't know much about tire sizes. On the tires, there is a 700x38c, which I've learned is the size of the tire. The 700 is the circumference, I've learned, and the 38C refers to the width of the tire.

My question is this--do I need to get 700x38c's to replace my tires, or am I free to get any tire that is 700, and go with something that is, say, a 700x28? What are the benefits to differing widths?

I realize there are different tires for different purposes, and many choices for each size. I've found that I'm doing a lot more riding on pavement, and I don't ride on gravel as much as I used to.

So....with all that being said, what size do I need?



Edited 1 time(s). Last edit at 01/17/2007 08:20PM by clay.
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Re: OT: Bikers (bicyclers), teach me about tire sizes, please
Posted by: Filliam H. Muffman
Date: January 17, 2007 08:25PM
A 700x28 tire would likely fit on your rim but you might need a new (smaller) tube for it, and inflate it to a higher pressure to help protect your rim from dents if you go over curbs. If you want to go much smaller, you might need to get a narrower rim.



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Re: OT: Bikers (bicyclers), teach me about tire sizes, please
Posted by: jdc
Date: January 17, 2007 08:29PM
i would stay with the same 38c -- or if yiou would like a touch more comfort move to a 43c

moving to a 28c is going to make ride more harsh, and thats about it...





Edited 999 time(s). Last edit at 12:08PM by jdc.



Edited 1 time(s). Last edit at 01/17/2007 08:30PM by jdc.
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Re: OT: Bikers (bicyclers), teach me about tire sizes, please
Posted by: Racer X
Date: January 17, 2007 08:33PM
correct. There are rim widths that fit a tire range between X and Y wide. 38 wide is as wide as they go AFAIK. But I think the 28-38 is the same rim. My wife's tubes are labeled 19-26 for example.
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Re: OT: Bikers (bicyclers), teach me about tire sizes, please
Posted by: clay
Date: January 17, 2007 08:47PM
so.....something like the Nashbar tire at the bottom would work for me?

[www.nashbar.com]

or should I look for something a little pricier/higher quality? I'm assuming that I wouldn't need a new tube with the 37?
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Re: OT: Bikers (bicyclers), teach me about tire sizes, please
Posted by: Racer X
Date: January 17, 2007 08:54PM
go for a smooth knobby tire, or an aggressive tread pattern "city" tire. Sort of an all-season tire, so to speak.
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Re: OT: Bikers (bicyclers), teach me about tire sizes, please
Posted by: clay
Date: January 17, 2007 09:29PM
thanks, all. I went with a 700x35 tire, and went ahead and ordered some more tubes (35-38) as well.

I've learned something today. Super!
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Re: OT: Bikers (bicyclers), teach me about tire sizes, please
Posted by: incognegro
Date: January 17, 2007 11:20PM
do you get many flats? consider a thorn-proof tube.
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Re: OT: Bikers (bicyclers), teach me about tire sizes, please
Posted by: h'
Date: January 18, 2007 01:02AM
My first choice would have been the Panaracers. Great buy!
Second would have been for you to try the 32s.
I used to use 28s on my Hybrid and was quite happy.
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Re: OT: Bikers (bicyclers), teach me about tire sizes, please
Posted by: clay
Date: January 18, 2007 06:50AM
I actually went with some panaracers: Panaracer X-Cinder Cyclocross 700x35c Tire

[www.nashbar.com]


not the 9.95 ones, but some 19.95 ones that were on sale



Edited 1 time(s). Last edit at 01/18/2007 06:50AM by clay.
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Re: OT: Bikers (bicyclers), teach me about tire sizes, please
Posted by: pixelzombie
Date: January 18, 2007 09:55AM
it's good that you have the model with the folding bead, much lighter than a wire bead...
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Re: OT: Bikers (bicyclers), teach me about tire sizes, please
Posted by: clay
Date: January 18, 2007 09:57AM
good to know, pixelzombie! thanks
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I'm disappointed.
Posted by: RAMd®d
Date: January 18, 2007 11:02AM
WHAT is this forum coming to?!

Not *one* mention of 36D or 34DD, no cheezy pictures of big breasted beach babes barely bothering to dress...

<sigh> Acting responsibly can be a real drag.






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Re: OT: Bikers (bicyclers), teach me about tire sizes, please
Posted by: Racer X
Date: January 18, 2007 03:53PM
I am sure clay was just bragging about how big his tube is.
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