So it seems like a couple of my tires have very small cracks in them. Mostly on the sidewall near the rim but on one theres a small crack on the open space in the tread. Im running 3.5 lbs as per their recommendation. Ive only had them for like 8 months and most of the time the bike’s been sitting since it was just winter and i didnt ride it very much. They barely have any miles on them. Should i be concerned or is that normal?