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New tires!
Last Post 05/20/2014 05:11 PM by 79 pmooney. 4 Replies.
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79pmooney

Posts:1130

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05/19/2014 07:53 PM
Rode 50 miles on brand new Challenge Strada Pro Series 25c tires.  Nice!  Impressive tires all the way through.  Easy to mount but the fit on the rim looks very secure.  (I say easy to mount because getting the last part of the bead over was no t difficult, but getting the tire to stay on the rim and the tube to stay in place was a a challenge until I took rope and periodically took two wraps around the tire and rim and ties it off.  I hear the second time is a lot easier.)

Tires are big and fat.  I didn't put calipers on them but they look a lot bigger than Vittoria Open Pros.  They have the file tread of the old Clement Criterium Setas (but not the Seta's centerline ribbed tread).  They roll beautifully and feel like you will always get a second chance if say you hit gravel on a corner.  Comfy over construction zones and on chip seal.

I was hoping to get tires that would give me confidence going down crazy descents fixed at Cycle Oregon this summer.  Still not sure I am going to do it, but one concern is allayed.  These tires feel completely up to that job.  (And if we go off road?  Is there a better 25c tire?)

I paid $75 ea at a small LBS.  They turned me on to them so I don't grudge that at all.

Ben
79pmooney

Posts:1130

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05/20/2014 11:51 AM
IN Velonews this morning: Zinn positing tire manufacturers' words on wet road adhesion.

http://velonews.competitor.com/2014/05/bikes-and-tech/technical-faq/technical-faq-tire-grip-wet-conditions_328827

The word? 25c, fine herringbone tread, high thread count and grippy rubber. (And tubes. Tubeless requires enough sidewall stiffness to avoid burbing that it defeats the requirement for supple sidewalls. Guess I'll stay tubed for a while longer. I should toss the brutal tubes and go latex.)

Latex - for safer sex and cornering!

Ben
Oldfart

Posts:483

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05/20/2014 12:39 PM
The claim that tubeless is less supple is from a company that does not produce one. My personal experience is that they are more supple that a good clincher and normal tube.
Oldfart

Posts:483

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05/20/2014 03:49 PM
and not only that, stiffer tires sometimes burp more readily because they don't flex as well as a supple thin casing tire, for mountain bikes anyway. Burping happens when you bottom out a tire on a bump and the edge of the bump pushes the bead off the bead seat on the rim.
79pmooney

Posts:1130

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05/20/2014 05:11 PM
I won't argue that. Still not likely to change for a long time, if ever. Not a fan of upgrading/obsoleting systems that work very well. I was talking of it last year after that crash, but I am just going to be more careful about what tires I use.

Ben
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