They are tubeless aren't they? TCS = Tubeless Compatible System
The reviews suggest a lot of sealant leakage through the sidewall. I have some tan wall WTB’s and they did leak a bit but have sealed nicely.
Gotchas. Now you say that the 2nd hand MTB bike I picked up had wtb that weeped through sidewalls.
@Alan_tbt started
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They are tubeless aren't they? TCS = Tubeless Compatible System