Anyone used Gravelking 650b x 38 mm tubeless

[Toshi Takeuchi]

I'm thinking of using Gravelking 650b x 38mm tubeless with A23 rims.  Has anyone used these Gravelkings?  I've never used tubeless before, so I'm trying to solicit experience with the 38s. Most of the tubeless seem to use fatter tires, presumably for lower pressure.  What pressure would you run the 38s?

Thanks,

Toshi in Oakland

[Tim Bantham]

I'm not running 650b but have Gravel Kings smooth tread in a 700C x 38. I set them up tubeless on Velocity Quill Rims and run them at 28psi. ( I weigh around 160). I love this setup! I have tried a multitude of tires through the years and find that these are the ones that I am 100% happy with. I don't really see a need to try others. I recommend Orange Seal Endurance for your sealant. Some say Stan's is just as good but I have found that OS lasts longer.

Tim 

[James / Analog Cycles]

Until recently I ran 700c tubeless GK smooth tires on my Sam.  The tires are great.  Best fast rolling gravel tire out there, IMO.  They're durable, ride great.  I ran mine at about 35 psi and could take it on mtn biking trails, bad roads, never got a flat.  Orange Seal Endurance sealant.  Quill Rims.  

-james / analog cycles

On Friday, November 8, 2019 at 8:20:48 PM UTC-5, ttoshi wrote:

[Kellie]

Ask James at Analog Cycles.

[spencer robinson]

I am running 700x38 gravel Kings on Velocity A-23 rims and the combination works very well. I could not get them to “jump on” the rims till I ran them with tubes for a few days, that took the folds out of the casing...then, pulled the tubes out, a quick blast with the air compressor and they seated beautifully, nice and straight, held air over night. I added sealant and they hold air great, I may add a little sit once a month. 

On Friday, November 8, 2019 at 8:20:48 PM UTC-5, ttoshi wrote:

[John McBurney]

I’m a daily bike commuter and as I think about it all my bikes run  compass tires. I ran Gravel Kings for a while on my commuter . OK but not as well made even though both made by panaracer. More flats than Compass too.  I like the 3 mm rubber in compass more than a breaker belt. When I ditched my GK they were just so thin. 

Honestly all my bikes run compass. 2 with tubes, 2 tubeless. 

John 

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[Toshi Takeuchi]

I like Compass tires too, but the 650b x 38 mm are not compatible with tubeless, so that is why I am going to give the Gravel Kings a try.  I will let everyone know how it goes.

Toshi

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[John McBurney]

I stand corrected. I am surprised. I run Compass 42 x 700 and 38 x 700 tubeless and 28 x 700 with tubes. I assume the 39 x650b reflects stock on hand. I ran into this with Bruce Gordon (God rest his soul) Rock and Road where the 700 s were not tubeless being made with a previous generation mold but 650b were tubeless compatible. Maybe the Compass 650b 38s tube required will sell out. May be worth an email to compass 

John 

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