CREATE TABLE table_77902 ("Driver" TEXT, "Constructor" TEXT, "Laps" FLOAT, "Time/Retired" TEXT, "Grid" FLOAT)

What is the top lap that had a tyre time?
SELECT MAX("Laps") FROM table_77902 WHERE "Time/Retired" = 'tyre'
SELECT MAX("Laps") FROM "table_77902" WHERE "Time/Retired" = 'tyre'