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Anyone put 30mm or even 32mm tires on Mavic Open Pros?

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Anyone put 30mm or even 32mm tires on Mavic Open Pros?

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Old 08-18-16, 11:09 AM
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Ride-Fly
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Anyone put 30mm or even 32mm tires on Mavic Open Pros?

I know Mavic recommends the max tire size on OPs at 28mm, but was wondering if anyone used a wider tire. If so, any issues?

Sheldon Brown's site recommends the inner width range of 15-19mm for a 32mm wide tire. Not sure what the inner width is for the OPs.

I've got a couple extra sets of OPs that I'd like to use for my future rando build, and would like the ability to run 32mm tires.

Thanks.
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Old 08-18-16, 11:12 AM
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Originally Posted by Ride-Fly View Post
I know Mavic recommends the max tire size on OPs at 28mm, but was wondering if anyone used a wider tire. If so, any issues?

Sheldon Brown's site recommends the inner width range of 15-19mm for a 32mm wide tire. Not sure what the inner width is for the OPs.

I've got a couple extra sets of OPs that I'd like to use for my future rando build, and would like the ability to run 32mm tires.

Thanks.
I ran thousands of miles with 30mm Strada Bianca on Open Pros and several thousand currently with 38mm Barlows.
You won't have a problem.
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Old 08-18-16, 11:14 AM
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I have about 2k miles on on 32mm Panracer Pacelas and not even a flat. I keep them inflated to 80psi.
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Old 08-18-16, 11:16 AM
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Originally Posted by Ride-Fly View Post
I know Mavic recommends the max tire size on OPs at 28mm, but was wondering if anyone used a wider tire. If so, any issues?

Sheldon Brown's site recommends the inner width range of 15-19mm for a 32mm wide tire. Not sure what the inner width is for the OPs.

I've got a couple extra sets of OPs that I'd like to use for my future rando build, and would like the ability to run 32mm tires.

Thanks.
Zero issues.

I run both styles of GK 700x32s and Compass Stampede Pass 700x32s.

Easy peasy install.

FWIW I run Continental latex tubes in the 28 size.
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Old 08-18-16, 11:21 AM
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I run 38mm Compass Barlow Pass on my Open Pros with zero issues. Prior, I ran 32mm &35mm Vittoria Hyper Rando tires. Again, zero issues. Always an easy install with both brands of tires.
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Old 08-18-16, 11:29 AM
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40's also worked, but I only had about 500 miles on these. Somehow I ended up with 3 sets of Mavic OP's.

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Old 08-18-16, 11:29 AM
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Most manufacturers have slightly conservative ratings to minimize liability exposure. The Open Pro is spec'd with a 15mm rim width, which according to Sutherland's Handbook is the minimum acceptable rim width for tyres with a 32mm section. They further state that hooked edge rims like the Open Pro can accommodate tyre section of 2.25x the rim width, which in the Open pro's case translates to 33.75mm. This substantiates the anecdotal evidence in the previous posts.
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Old 08-18-16, 11:30 AM
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AWESOME! Thanks guys!!

This forum is the best.
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Old 08-18-16, 11:45 AM
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Go for it. I've run larger. Only issue to watch for is brake track wear. Tire pressure is forcing the rim flanges apart. The bigger the tire and higher the perssure, the bigger the force. Not an issue with new rims. But old, worn rims, especially those that have seen winter and wet road grit may not be strong enough to resist that force, especially on larger tires. When the rim gives, the tire explodes and may well blow a sharp 10" piece of aluminum out which will cut anything in its path if you are riding the bike. I've seen both carbon fiber chainstays and human calves cut by those slivers.

Good thing - brake wear is easy to check for. Put a straight edge across the brake track. If you see a big hollow between the track and straight edge, but that rim on your replacement list and stay away from big tires and high pressures. I didn't on a gravel bike I set up. Put 35s on Mavic Sport rims (a little heavier but similar to Open Pros). Hours later I was in the house when I heard an explosion in the garage. No harm done but one rim, tire and tube were completely toast. Very glad I wasn't riding! Same tires on the same but new rims, no issues at all and a great ride.

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Old 08-18-16, 11:57 AM
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I've run Panaracer Pasela 32s, Clement LAS 33s and Rivendell Jack Brown 33s extensively on my Open Pro wheels with no issues whatsoever. The LAS and Jack Browns actually measure closer to 35 mm wide on my rims.
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