I ordered 888's the last two times I have needed tires and was not able to get them because they were back ordered so I haven't used them to comment.
At Miller I only used one set of tires (ra1's) I think I drove about 350 miles in three days. The rear tires wore out faster than the fronts because of the rear alignment issue I developed on Friday, so I rotated the passenger side tires on Sunday and that was it for the whole weekend. I don't know of too many tires that you can run on that hard for 3 days with a bad alignment and still be competetive. I hope they continue to make the ra1's and it will stay the spec tire, if it ain't broke .......!