Calum I notice that you are getting small cracks on the edge of the tread blocks, my tyres are the similar but on outer blocks also. At last MOT tyre cracking was noted as an advisory, I dont see any other cracks, not sure if its on any concern. Do you always fit new tubes with new tyres?
Don't think the little tears in the tread blocks are an issue, just using the grip! I never used to change them every time but have changed my mind and now do fit new tubes with each new tyre. The tubes get a bit of a hard time from the spoke nipples so I reckon it's a good idea.
