I needed to replace a front tube today on a Heidenau K60 so I took off the tire and noticed this gouge along the outer wall of the bead. You can see the metal wire inside, but they don't appear to be broken, just exposed. I'm thinking this isn't a good idea to put back on? I'm going to put about 1,400 miles on my bike in a few days. This tire has a few hundred miles on it. I must have gouged it when I installed it or today when I took it off. I have an old tire that still has some tread, so that would be the safer option, right? If I get a new tire, then I'll want to try to break that one in and not sure if I will have time for that. What should I do?