Looks like curb damage...
The correct thing to do by the book is to replace the tire... however, if they are Pilot Super Sports, it would be hard to find a single replacement since these have been discontinued and replaced by the Pilot Sport 4s.
However, if you were on a tight budget, since the belts are not showing (if what you're saying is true) then I wouldn't be too concerned about using this tire. Of course, check your tire pressures before you leave on said road trip this summer, and make sure this tire goes on the rear so it is under less load when cornering and braking if you want a little extra peace of mind.