So I checked on my tires after work today and saw this, all along the 'rim protector' edge (not the bead). Only on the rears:

The fronts are *fine*, tires are almost 3 yrs old, ADVAN S4. Well it was a good run.
I've been bombing down twisties on these for a long time, not anymore now that I see this!
Don't know what to get now .. . Direzza Star Spec I think...oh god... so indecisive ..
