Hi there, I’m going to do a 100mile ride in three weeks time and I’d like your advice on the tyres I have on atm. I had these tyres on for about 1yr 1/2 and although the wear hasn’t reached the point when I normally would replace them, they developed a few cracks over the winter. I didn’t have a puncture for a while and they still feel good but I’m a bit anxious to take them for a 100mil ride. What your view on that?

thanks!