Michelins Dynamic Sports. Picked these up from Jenson last week and I like these tires for the low price I paid. approx. 50 miles on them. Today I noticed this clean cut in the rear. It does not go through to the tube. I must have run over something very sharp at just the right angle.

Can i repair this? Should I continue to ride it but monitor it? Or is this tire now a spare? I've never seen this before and am stumped.

Unrelated: awesome customer service at Jenson will call in Riverside. Wouldn't even consider going elsewhere.