Are you sure?
Pilot Roads front tires come out of the mold with 5/32 of tread depth. The wear bar is 2/32 of that, leaving 3/32 of usable thread. I kind of doubt you have 2/32 to 4/32 (1/16 to 1/8") of tread left after 7,000 miles but appearances can be deceiving.
If you don't have a tread depth gauge you can use a penny to gauge tread depth. It is approximately 2/32" from the edge of the coin to the top of Abe's head.
I think I had 1/32" left to the wear bars after 6,400 miles on my set of PR's.