I just got a tubular wheelset. The front has a groove in the center of the tire bed while the rear does not (see pics). These are my first tubular wheels. Seems like most pics I see have a smooth tire bed although I was able to find a few sites showing a groove. For example...
These sites indicate this groove provides space for the seam on the tubular tire.
Is there any reason for this difference in front and rear or is there a problem with the wheelset. I would expect them to be the same because I thought rear and front rims are the same and it's just the hubs that are different.
Unrelatedly, there is a small depression on the edge of the rim in the carbon only, but it's filled in by resin (see image). Is this a problem?
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Thread: Tubular rim groove