Geax Barro Race 29"er Tire: First Impressions

Editor’s Note: Captain Bob and I both have a set of these tires, so we will be doing a tag-team review.

The Geax Barro Race tires have been mounted up and ridden by both Captain Bob and myself, Guitar Ted. There are some things we think you should know about our setups, so we’ll cover that first.

Fargo with Geax Barro Race tires
The Geax Barro Race tires on the Fargo rig.

Guitar Ted: I chose to mount the Barro Race tires on the Fargo we are testing. The wheels are Mavic Cr29max, and I did set these up tubeless. The process to air these up with sealant inside went very smoothly. The interface of tire and rim, with this combination, was perfect. Probably one of the easier tires to set up tubeless that I have done. The beads set at 30-35 psi! No leak down either after 24 hours.

Captain Bob: Captain Bob mounted his set of Barro Race tires on his Alex TD-17 rims/Paul hubs and will be using tubes on a single speed rigid front 29″er hardtail. The install went super smooth with just a bit of a tight fit. The tires aired up and seated properly with no issues.

Measurements: Here’s where we were a bit surprised. Captain Bob’s measurement of the Barro race on the Alex TD-17 rims was definitely under two inches. My measurement after 24 hours with 38psi in the tires was 49.7mm. (Two inches is 50.8mm) This falls somewhat short of our expectations, especially when the Saguaro tires have always been spot on width-wise for us. Still, the width is close, and after riding some we will re-measure to see if they stretched up any at all. Update: The tires have stretched some more and are now measuring 50.9mm. This is getting to be an acceptable width for the claimed width on the tire. An actual 2 inches now, but it took several rides for that to happen. Don’t expect the Barro Race tires to be at two inches out of the box.

First Impressions- Guitar Ted: My first little spin on Barro Race tires was actually on Captain Bob’s bike. I thought that the grip and cornering precision on packed gravel and sand was really impressive. I am hopeful that once we get some dry trails this will play out there, but indications are it will be a good cornering tire. For my bikes first run, I decided to hit some mud right away. The Barro Race is developed from Geax’s Barro Mud tire, so I figured maybe some of the lineage caried over to the Barro Race. Wet mud showed the Barro Race performance was average, but my foray into the sticky stuff showed that the Barro Race is best kept on dry turf.

Mud packed Barro Race
Sticky mud isn’t the Barro Race’s forte’.

So I decided to run some packed earth, packed gravel, some pavement, and gravel roads on an adventure ride. The various surfaces showed me that the harder the surface, the more you feel the resistance of the Barro Race’s tread blocks. They don’t slow you down terribly, but especially on pavement, you can feel the vibrations, hear the buzz, and feel a bit more resistance on the pedals. Tacky dirt, loose rock and loamy stuff was better. Much better. Gravel was okay. The cornering on gravel was excellent for me, as long as you didn’t get into the marbles, where it would ping off the bigger rocks due to the narrower size. I’ll have to get on some real single track before any of this makes much sense, but indications are that the Barro Race will be a great tire there.

(Editor’s Note: Captain Bob will report on his impressions a bit later. He hasn’t gotten to ride these as much as I have yet. Stay Tuned! I’ll update this post when hegets a report in to me.)

We’ll both report back with more as the trails open up and we get more time on these.


No Responses to “Geax Barro Race 29"er Tire: First Impressions”

  1. GreenLightGo Says:

    Thanks for the update. Will be watching this test as it progresses.

  2. paragonjeff Says:

    i was running a conti MK 2.2 up front and a barro race out back on my set of i9 gordos. this was a very fast combo.

  3. agu Says:

    Hmmm…wonder if a Saguaro front and Barro Race rear would be a nice pairing….

    GT – can you post comparison photos of the two tires?

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