CREATE TABLE table_54060 ("Rider" TEXT, "Manufacturer" TEXT, "Laps" FLOAT, "Time/Retired" TEXT, "Grid" FLOAT)

Which manufacturer has a Time/Retired of +15.665?
SELECT "Manufacturer" FROM table_54060 WHERE "Time/Retired" = '+15.665'
SELECT "Manufacturer" FROM "table_54060" WHERE "Time/Retired" = '+15.665'