As anyone ran into problems with the Giant S-XC29 2 rims not converting tubeless due to the joint where the rim comes together leaking? I'm having my LBS setup my bike with tubeless tires and one of the rims continues to leak from what appears to be the 'pinned' joint that connects the rims together. I originally had them install Continental Mountain King's II but they couldn't get the front tire to seat. They thought it was the tire so they tried a set of Specailized tires which at first seemed to work, but then the same rim started leaking again at the rim joint.

Is this something the LBS is doing wrong or do I have a bad S-XC29 2 rim that is never going to seal up well enough to convert tubeless because of the rim joint? As anyone ran into problems with the Giant S-XC29 2 rims not converting tubeless due to the joint where the rim comes together leaking?

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I'm having my LBS setup my bike with tubeless tires and one of the rims continues to leak from what appears to be the 'pinned' joint that connects the rims together. I originally had them install Continental Mountain King's II but they couldn't get the front tire to seat. They thought it was the tire so they tried a set of Specailized tires which at first seemed to work, but then the same rim started leaking again at the rim joint. Is this something the LBS is doing wrong or do I have a bad S-XC29 2 rim that is never going to seal up well enough to convert tubeless because of the rim joint?Wow, sorry to hear that. I just got a new 2013 'early release' AnthemX Advanced 29er 2 that came with the exact wheelset w/Schwalbe Racing Ralph 2.25 and my lbs converted them over tubeless with stans and I've had no problems so far. Converting a non-tubeless wheelset to tubeless is not 100% guaranteed so you have to accept the results pretty much. I also have a 2011 Specialized FSR 26 that was converted where the front tire has to be pumped up about every 3 days (loses about 5lbs) so I live with that.

Currently looking at a set of I9 ZTR ArchEX (which are Stans and designed tubeless). Price of those has caused me to pause a bit though. For those of you who have successfully converted the P-XC2 wheels tubeless, did you drill out the inner channel hole to 3/8' like the Stan's video shows? It's the 'Tubeless Kit' video in this link: I don't really understand the importance of this step, unless the valve would not fit through the hole. Fwiw, I'll be using the gorilla tape method.I have no idea why they have that step on the video. I remember seeing it also, and was thinking, no way I am taking a drill to my rims. You DO NOT need to drill anything!

Put the drill away Good luck and enjoy your tubeless setup! The only thing I can think of is that they were doing that to improve airflow for that initial burst of air from the compressor, but that would not be a bottleneck compared to that tiny opening for the presta valve. Anyway, I did no drilling and have no problems.