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Open Pros & Tire Width?(8 posts)

Open Pros & Tire Width?Drupa
Aug 25, 2002 5:02 PM
Sheldon Brown says 32s on an Open Pro is pushing it. Is this true?
re: Open Pros & Tire Width?B123
Aug 25, 2002 6:35 PM
What! Maybe that's true, but I run 43's mountain biking without problems.
re: Open Pros & Tire Width?flyweight
Aug 26, 2002 10:06 AM
With all due respect, as far as I know Sheldon doesn't race 'cross. He's a ***really*** smart guy but he's also pretty conservative (a good thing since too many people in the business seem hell bent on pushing the limits)

I've run 38mm Ritchey clinchers (realistically 35mm) on Open Pros with no problems. I've run as little as 50psi in them and taken them down long fireroad descents.
re: Open Pros, Tire Width?KenS
Aug 26, 2002 10:31 AM
I use Ritchey Speed Cross in 32 with Open Pro rims as my daily-use tire and have had no problems.

What does he say is the danger?
re: Open Pros, Tire Width?atpjunkie
Aug 26, 2002 4:04 PM
been running 32-35's on my open pros with no trouble. Have set of 38's I haven't tried yet. Am wondering what's the risk as well. I'm well over 200 lbs and push the tires hard and have had no trouble (yet)
re: Open Pros, Tire Width?Drupa
Aug 26, 2002 5:38 PM
Good to know folks are using tires bigger than 32s.

I think Sheldon was saying that larger tires - as the size and profile increase - lose some of their "clinchability". The rim clinches less of the cross section circumference and could more easily become "unclinched".
re: Open Pros, Tire Width?atpjunkie
Aug 26, 2002 6:42 PM
especially with Kevlar, maybe I should stick to wire bead on bigger tyres
re: Open Pros, Tire Width?OffRoadTourer
Aug 27, 2002 6:04 AM
Just for reference, weighing 190lb, I run 38c Tioga BloodHounds on Campagnolo Atlanta Rims (which are only 13c wide) at 75-80 psi and have never had a problem. I can't help but wonder if the concern about tyres blowing off rims is based on the (false) assumption that you'll still be running 120psi like you would with a more "normal" width road tyre.