Have only 40,000 km riding experience so looking for some experienced opinions on what tire degradation might feel like. I have 18,000 km on a Mitas E07 on the front, it has had a slow leak for a while, but the bike just developed some new issues and I wanted to see if these are tire-related. Started to hear a rhythmic noise on revolution and a low-speed wobble, then on a 150 km highway ride some pronounced vibration on the left hand mirror and footpeg. Got home and upon inspecting the tire, it is visually intact but when pressing on the tread, it feels like there is a void or air bubble in sections around the circumference of the tire. Ordered a replacement off MX-1 (they still appear to have stock of the front Mitas E07 but none of the regular rear as was mentioned in a post recently they appear to have been discontinued) so am changing it out, but am questioning whether the tire is safe to ride on until I receive it and are those symptoms I mention indicative of issues with the tire?