Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not too thrilled...

Michelin Dynamic 700cx23 came with the bike. Took the bike to the bike shop for pro adjustment. Took it for a ride, and in the first 4 1/2 miles experienced a front flat. Wasn't too happy but thought could happen to anyone. Replaced it, checked the tire for foreign objects which I couldn't find, inspected the tire on the outside and didn't see punctures, put a new tube, got home. Within two days I had another flat on the front wheel, 21 miles total. Took appart everything, triple inspected everything, no visible puncture, nothing inside of the tire. Tube was punctured on a different spot this time. Overall not too happy with the tire. After the second incident I didn't have any problems yet, it's been about 50-70 miles later. I am not sure if tubes were bad, Kenda tubes, I used these before without many issues. If I don't have any more problems I might consider this tire again, but if this keeps on happening I am switching.